A small box with memorabilia of former Austrian Empress Elisabeth which lay hidden away for decades in the attic of Seisenegg Castle near the town of Amstetten in Lower Austria, is on display at Sisi museum in Vienna April 23, 2014. A special exhibit running from April 24 till December 24 commemorates the 10 year anniversary of the museum, dedicated to Habsburg Empress Elisabeth who was called Sisi by her family and friends. Picture taken April 23, 2014. REUTERS/Heinz-Peter Bader (AUSTRIA - Tags: ENTERTAINMENT SOCIETY ROYALS) 

The house of Josef Fritzl, who kept his daughter captive for 24 years and fathered seven children in the cellar, is pictured in the village of Amstetten June 21, 2013. The cellar is being sealed off with concrete, much to the relief of neighbours keen to forget one of Austria's most horrific crimes. Fritzl, was sentenced in 2009 to life imprisonment in a special unit for the criminally insane for incest, rape, coercion, false imprisonment, enslavement and for the negligent homicide of one of his infant sons. REUTERS/Leonhard Foeger (AUSTRIA - Tags: CRIME LAW) 

The house of Josef Fritzl, who kept his daughter captive for 24 years and fathered seven children in the cellar, is pictured in the village of Amstetten June 21, 2013. The cellar is being sealed off with concrete, much to the relief of neighbours keen to forget one of Austria's most horrific crimes. Fritzl, was sentenced in 2009 to life imprisonment in a special unit for the criminally insane for incest, rape, coercion, false imprisonment, enslavement and for the negligent homicide of one of his infant sons. REUTERS/Leonhard Foeger (AUSTRIA - Tags: CRIME LAW) 

The house of Josef Fritzl, who kept his daughter captive for 24 years and fathered seven children in the cellar, is pictured in the village of Amstetten June 21, 2013. The cellar is being sealed off with concrete, much to the relief of neighbours keen to forget one of Austria's most horrific crimes. Fritzl, was sentenced in 2009 to life imprisonment in a special unit for the criminally insane for incest, rape, coercion, false imprisonment, enslavement and for the negligent homicide of one of his infant sons. REUTERS/Leonhard Foeger (AUSTRIA - Tags: CRIME LAW) 

The house of Josef Fritzl, who kept his daughter captive for 24 years and fathered seven children in the cellar, is pictured in the village of Amstetten June 21, 2013. The cellar is being sealed off with concrete, much to the relief of neighbours keen to forget one of Austria's most horrific crimes. Fritzl, was sentenced in 2009 to life imprisonment in a special unit for the criminally insane for incest, rape, coercion, false imprisonment, enslavement and for the negligent homicide of one of his infant sons. REUTERS/Leonhard Foeger (AUSTRIA - Tags: CRIME LAW) 

Building materials stand in the garden of the house of Josef Fritzl, who kept his daughter captive for 24 years and fathered seven children in the cellar, in the village of Amstetten June 21, 2013. The cellar is being sealed off with concrete, much to the relief of neighbours keen to forget one of Austria's most horrific crimes. Fritzl, was sentenced in 2009 to life imprisonment in a special unit for the criminally insane for incest, rape, coercion, false imprisonment, enslavement and for the negligent homicide of one of his infant sons. REUTERS/Leonhard Foeger (AUSTRIA - Tags: CRIME LAW CITYSPACE) 

A concrete tank stands in the garden of the house of Josef Fritzl, who kept his daughter captive for 24 years and fathered seven children in the cellar, in the village of Amstetten June 21, 2013. The cellar is being sealed off with concrete, much to the relief of neighbours keen to forget one of Austria's most horrific crimes. Fritzl, was sentenced in 2009 to life imprisonment in a special unit for the criminally insane for incest, rape, coercion, false imprisonment, enslavement and for the negligent homicide of one of his infant sons. REUTERS/Leonhard Foeger (AUSTRIA - Tags: CRIME LAW CITYSPACE) 

A concrete tank stands in the garden of the house of Josef Fritzl, who kept his daughter captive for 24 years and fathered seven children in the cellar, in the village of Amstetten June 21, 2013. The cellar is being sealed off with concrete, much to the relief of neighbours keen to forget one of Austria's most horrific crimes. Fritzl, was sentenced in 2009 to life imprisonment in a special unit for the criminally insane for incest, rape, coercion, false imprisonment, enslavement and for the negligent homicide of one of his infant sons. REUTERS/Leonhard Foeger (AUSTRIA - Tags: CRIME LAW CITYSPACE) 

The garden of the house of Josef Fritzl, who kept his daughter captive for 24 years and fathered seven children in the cellar, is filled with building materials, in the village of Amstetten June 21, 2013. The cellar is being sealed off with concrete, much to the relief of neighbours keen to forget one of Austria's most horrific crimes. Fritzl, was sentenced in 2009 to life imprisonment in a special unit for the criminally insane for incest, rape, coercion, false imprisonment, enslavement and for the negligent homicide of one of his infant sons. REUTERS/Leonhard Foeger (AUSTRIA) 

Representatives of the metal industry's union "PRO-GE" commonly known as "Metaller" demonstrate in front of Buntmetall factory during a strike in Amstetten some 100 kilometres (62 miles) west of Vienna, October 14, 2011. Workers are on strike in several companies demanding higher salaries while annual negotiations with the industry are interrupted. Text reads "On strike". REUTERS/Heinz-Peter Bader (AUSTRIA - Tags: POLITICS BUSINESS EMPLOYMENT CIVIL UNREST) 

Representatives of the metal industry's union "PRO-GE" commonly known as "Metaller" demonstrate in front of Buntmetall factory during a strike in Amstetten some 100 kilometres (62 miles) west of Vienna, October 14, 2011. Workers are on strike in several companies demanding higher salaries while annual negotiations with the industry are interrupted. Banner reads "We are fighting for our collective treaty". REUTERS/Heinz-Peter Bader (AUSTRIA - Tags: POLITICS BUSINESS EMPLOYMENT CIVIL UNREST) 

Representatives of the metal industry's union "PRO-GE" commonly known as "Metaller" demonstrate in front of Buntmetall factory during a strike in Amstetten some 100 kilometres (62 miles) west of Vienna, October 14, 2011. Workers are on strike in several companies demanding higher salaries while annual negotiations with the industry are interrupted. Texts reads "On strike". REUTERS/Heinz-Peter Bader (AUSTRIA - Tags: POLITICS BUSINESS EMPLOYMENT CIVIL UNREST) 

Representatives of the metal industry's union "PRO-GE" commonly known as "Metaller" demonstrate in front of Buntmetall factory during a strike in Amstetten some 100 kilometres (62 miles) west of Vienna, October 14, 2011. Workers are on strike in several companies demanding higher salaries while annual negotiations with the industry are interrupted. Texts reads "On strike". REUTERS/Heinz-Peter Bader (AUSTRIA - Tags: POLITICS BUSINESS EMPLOYMENT CIVIL UNREST) 

Representatives of the metal industry's union "PRO-GE" commonly known as "Metaller" demonstrate in front of Buntmetall factory during a strike in Amstetten some 100 kilometres (62 miles) west of Vienna, October 14, 2011. Workers are on strike in several companies demanding higher salaries while annual negotiations with the industry are interrupted. REUTERS/Heinz-Peter Bader (AUSTRIA - Tags: POLITICS BUSINESS EMPLOYMENT CIVIL UNREST) 

Representatives of the metal industry's union PRO-GE commonly known as "Metaller" demonstrate in front of Buntmetall factory during a strike in Amstetten, some 100 kilometers (62 miles) west of Vienna October 14, 2011. Workers are on strike in several companies demanding higher salaries while annual negotiations with the industry are interrupted. Banner reads "We are fighting for our collective treaty".REUTERS/Heinz-Peter Bader (AUSTRIA - Tags: POLITICS BUSINESS EMPLOYMENT CIVIL UNREST) 

Representatives of the metal industry's union PRO-GE commonly known as "Metaller" demonstrate in front of Buntmetall factory during a strike in Amstetten, some 100 kilometers (62 miles) west of Vienna October 14, 2011. Workers are on strike in several companies demanding higher salaries while annual negotiations with the industry are interrupted. Texts reads "On strike". REUTERS/Heinz-Peter Bader (AUSTRIA - Tags: POLITICS BUSINESS EMPLOYMENT CIVIL UNREST) 

Representatives of the metal industry's union PRO-GE commonly known as "Metaller" demonstrate in front of Buntmetall factory during a strike in Amstetten, some 100 kilometers (62 miles) west of Vienna October 14, 2011. Workers are on strike in several companies demanding higher salaries while annual negotiations with the industry are interrupted. Banner reads "We are fighting for our collective treaty".REUTERS/Heinz-Peter Bader (AUSTRIA - Tags: POLITICS BUSINESS EMPLOYMENT CIVIL UNREST) 

Representatives of the metal industry's union PRO-GE commonly known as "Metaller" demonstrate in front of Buntmetall factory during a strike in Amstetten, some 100 kilometers (62 miles) west of Vienna October 14, 2011. Workers are on strike in several companies demanding higher salaries while annual negotiations with the industry are interrupted. Texts reads "On strike". REUTERS/Heinz-Peter Bader (AUSTRIA - Tags: POLITICS BUSINESS EMPLOYMENT CIVIL UNREST) 

The house of Josef Fritzl is pictured in Amstetten March 16, 2009. Fritzl, a 73-year-old Austrian who locked his daughter in a cellar for 24 years and fathered seven children with her, pleaded guilty to incest on Monday but denied murdering a newborn son who died underground. Fritzl pleaded "partially" guilty to rape -- understood to mean he is contesting the way the charge is worded -- and deprivation of liberty. He said he was fully guilty of depriving the children marooned underground of their liberty. Fritzl, also pleaded innocent to a charge of enslaving his daughter Elisabeth for most of her life, according to Reuters reporters at the closed-door trial . REUTERS/Heinz-Peter Bader (AUSTRIA) 

The house of Josef Fritzl is pictured in Amstetten March 16, 2009. Fritzl, a 73-year-old Austrian who locked his daughter in a cellar for 24 years and fathered seven children with her, pleaded guilty to incest on Monday but denied murdering a newborn son who died underground. Fritzl pleaded "partially" guilty to rape -- understood to mean he is contesting the way the charge is worded -- and deprivation of liberty. He said he was fully guilty of depriving the children marooned underground of their liberty. Fritzl, also pleaded innocent to a charge of enslaving his daughter Elisabeth for most of her life, according to Reuters reporters at the closed-door trial . REUTERS/Heinz-Peter Bader (AUSTRIA) 

The house of Josef Fritzl is pictured in Amstetten March 16, 2009. Fritzl, a 73-year-old Austrian who locked his daughter in a cellar for 24 years and fathered seven children with her, pleaded guilty to incest on Monday but denied murdering a newborn son who died underground. Fritzl pleaded "partially" guilty to rape -- understood to mean he is contesting the way the charge is worded -- and deprivation of liberty. He said he was fully guilty of depriving the children marooned underground of their liberty. Fritzl, also pleaded innocent to a charge of enslaving his daughter Elisabeth for most of her life, according to Reuters reporters at the closed-door trial . REUTERS/Heinz-Peter Bader (AUSTRIA) 

The house of Josef Fritzl is pictured in Amstetten March 16, 2009. Fritzl, a 73-year-old Austrian who locked his daughter in a cellar for 24 years and fathered seven children with her, pleaded guilty to incest on Monday but denied murdering a newborn son who died underground. Fritzl pleaded "partially" guilty to rape -- understood to mean he is contesting the way the charge is worded -- and deprivation of liberty. He said he was fully guilty of depriving the children marooned underground of their liberty. Fritzl, also pleaded innocent to a charge of enslaving his daughter Elisabeth for most of her life, according to Reuters reporters at the closed-door trial . REUTERS/Heinz-Peter Bader (AUSTRIA) 

The locked entrance to the backyard of the house of Josef Fritzl is pictured in Amstetten March 16, 2009. Fritzl, a 73-year-old Austrian who locked his daughter in a cellar for 24 years and fathered seven children with her, pleaded guilty to incest on Monday but denied murdering a newborn son who died underground. Fritzl pleaded "partially" guilty to rape -- understood to mean he is contesting the way the charge is worded -- and deprivation of liberty. He said he was fully guilty of depriving the children marooned underground of their liberty. Fritzl, also pleaded innocent to a charge of enslaving his daughter Elisabeth for most of her life, according to Reuters reporters at the closed-door trial . "Polizei - Betreten verboten" reads "Police - entry forbidden". REUTERS/Heinz-Peter Bader (AUSTRIA CONFLICT SOCIETY) 

The locked entrance to the backyard of the house of Josef Fritzl is pictured in Amstetten March 16, 2009. Fritzl, a 73-year-old Austrian who locked his daughter in a cellar for 24 years and fathered seven children with her, pleaded guilty to incest on Monday but denied murdering a newborn son who died underground. Fritzl pleaded "partially" guilty to rape -- understood to mean he is contesting the way the charge is worded -- and deprivation of liberty. He said he was fully guilty of depriving the children marooned underground of their liberty. Fritzl, also pleaded innocent to a charge of enslaving his daughter Elisabeth for most of her life, according to Reuters reporters at the closed-door trial . "Polizei - Betreten verboten" reads "Police - entry forbidden". REUTERS/Heinz-Peter Bader (AUSTRIA CONFLICT SOCIETY) 

An exterior view of the prison in Sankt Poelten in Austria's province of Lower Austria March 10, 2009. The trial of Josef Fritzl, a man who had kept his daughter prisoner in a cellar for 24 years, will take place from March 16 to 20 in the court of Sankt Poelten next to the prison.REUTERS/Dominic Ebenbichler (AUSTRIA) 

An exterior view of the prison in Sankt Poelten in Austria's province of Lower Austria March 10, 2009. The trial of Austrian Josef Fritzl, a man who had kept his daughter prisoner in a cellar for 24 years, will take place from March 16 to 20 in the court of Sankt Poelten next to the prison.REUTERS/Dominic Ebenbichler (AUSTRIA) 

A road sign for the town of Amstetten, where Josef Fritzl imprisoned his daughter for 24 years, is pictured in eastern Austria March 10, 2009. The trial of Josef Fritzl, a man who had kept his daughter prisoner in a cellar for 24 years, will take place from March 16 to 20 in the court of Sankt Poelten next to the prison. REUTERS/Dominic Ebenbichler (AUSTRIA) 

A road sign for the town of Amstetten, where Josef Fritzl imprisoned his daughter for 24 years, is pictured in eastern Austria March 10, 2009. The trial of Josef Fritzl, a man who had kept his daughter prisoner in a cellar for 24 years, will take place from March 16 to 20 in the court of Sankt Poelten next to the prison. REUTERS/Dominic Ebenbichler (AUSTRIA) 

The house where Austrian Josef Fritzl imprisoned his daughter for 24 years, is pictured behind a fence in eastern Austrian town of Amstetten, March 10, 2009. The trial of Josef Fritzl, a man who had kept his daughter prisoner in a cellar for 24 years, will take place from March 16 to 20 in the court of Sankt Poelten next to the prison. REUTERS/Dominic Ebenbichler (AUSTRIA) 

An exterior view of the prison in Sankt Poelten in Austria's province of Lower Austria March 10, 2009. The trial of Austrian Josef Fritzl, a man who had kept his daughter prisoner in a cellar for 24 years, will take place from March 16 to 20 in the court of Sankt Poelten next to the prison.REUTERS/Dominic Ebenbichler (AUSTRIA) 

An exterior view of the prison in Sankt Poelten in Austria's province of Lower Austria March 10, 2009. The trial of Austrian Josef Fritzl, a man who had kept his daughter prisoner in a cellar for 24 years, will take place from March 16 to 20 in the court of Sankt Poelten next to the prison.REUTERS/Dominic Ebenbichler (AUSTRIA) 

An exterior view of the prison in Sankt Poelten in Austria's province of Lower Austria March 10, 2009. The trial of Austrian Josef Fritzl, a man who had kept his daughter prisoner in a cellar for 24 years, will take place from March 16 to 20 in the court of Sankt Poelten next to the prison.REUTERS/Dominic Ebenbichler (AUSTRIA) 

An exterior view of the prison in Sankt Poelten in Austria's province of Lower Austria March 10, 2009. The trial of Austrian Josef Fritzl, a man who had kept his daughter prisoner in a cellar for 24 years, will take place from March 16 to 20 in the court of Sankt Poelten next to the prison.REUTERS/Dominic Ebenbichler (AUSTRIA) 

An exterior view of the prison in Sankt Poelten in Austria's province of Lower Austria March 10, 2009. The trial of Austrian Josef Fritzl, a man who had kept his daughter prisoner in a cellar for 24 years, will take place from March 16 to 20 in the court of Sankt Poelten next to the prison.REUTERS/Dominic Ebenbichler (AUSTRIA) 

The house where Austrian Josef Fritzl imprisoned his daughter for 24 years, is pictured behind a fence in eastern Austrian town of Amstetten, March 10, 2009. The trial of Josef Fritzl, a man who had kept his daughter prisoner in a cellar for 24 years, will take place from March 16 to 20 in the court of Sankt Poelten next to the prison. REUTERS/Dominic Ebenbichler (AUSTRIA) 

The house in Amstetten, where Austrian Josef Fritzl imprisoned his daughter for 24 years, is pictured behind a fence in eastern Austria March 10, 2009. The trial of Fritzl, a man who had kept his daughter prisoner in a cellar for 24 years, will take place from March 16 to 20 in the court of Sankt Poelten next to the prison. REUTERS/Dominic Ebenbichler (AUSTRIA) 

A poster made by the family of Josef Fritzl, who had kept his daughter prisoner for 24 years, is on display behind a shop window in Amstetten May 14, 2008. The text reads: "We, the whole family, want to take this opportunity to thank you all for your sympathies with our fate. Your compassion helps us a lot to cope with this difficult time and shows us, that there are also good and honest people. We hope the time will come for us to find back into normal life again!". REUTERS/Heinz-Peter Bader (AUSTRIA) 

A part of a poster made by the family of Josef Fritzl, who had kept his daughter prisoner for 24 years, is on display behind a shop window in Amstetten May 14, 2008. Text reads: Elisabeth - "Wishes: Convalescence of my daughter Kerstin. The childrens' love. Protection of the family. People with lots of heart and understanding". REUTERS/Heinz-Peter Bader (AUSTRIA) 

A poster made by the family of Josef Fritzl, who had kept his daughter prisoner for 24 years, is on display behind a shop window in Amstetten May 14, 2008. The text reads: "We, the whole family, want to take this opportunity to thank you all for your sympathies with our fate. Your compassion helps us a lot to cope with this difficult time and shows us, that there are also good and honest people. We hope the time will come for us to find back into normal life again!". REUTERS/Heinz-Peter Bader (AUSTRIA) 

A part of a poster made by the family of Josef Fritzl, who had kept his daughter prisoner for 24 years, is on display behind a shop window in Amstetten May 14, 2008. Texts read: Stefan - "I miss my sister. Happy about freedom and my family. I like the sun, the fresh air and the nature". Alexander - "I desire freedom, strength and power and the sun. I miss the fire brigade, the school and sister Kerstin". REUTERS/Heinz-Peter Bader (AUSTRIA) 

A poster made by the family of Josef Fritzl, who had kept his daughter prisoner for 24 years, is on display behind a shop window in Amstetten May 14, 2008. The text reads: "We, the whole family, want to take this opportunity to thank you all for your sympathies with our fate. Your compassion helps us a lot to cope with this difficult time and shows us, that there are also good and honest people. We hope the time will come for us to find back into normal life again!". REUTERS/Heinz-Peter Bader (AUSTRIA) 

A firefighter stands in front of the Mauer hospital where the family of Josef Fritzl, are being treated in Amstetten in eastern Austria May 8, 2008. Fritzl, a 73-year-old electrical engineer, lured his daughter Elisabeth into a basement in 1984, drugged her and locked her up before abusing her for almost a quarter of a century and fathering her seven children. Three of the children remained locked up with their mother in the basement and never saw sunlight until their fate was revealed nearly two weeks ago.
REUTERS/Herbert Neubauer (AUSTRIA) 

A security guard stands in front of the Mauer hospital where the family of Josef Fritzl, are being treated in Amstetten in eastern Austria May 8, 2008. Fritzl, a 73-year-old electrical engineer, lured his daughter Elisabeth into a basement in 1984, drugged her and locked her up before abusing her for almost a quarter of a century and fathering her seven children. Three of the children remained locked up with their mother in the basement and never saw sunlight until their fate was revealed nearly two weeks ago.
REUTERS/Herbert Neubauer (AUSTRIA) 

A police photographer works in the backyard of a house in Amstetten, where Josef Fritzl imprisoned his daughter for 24 years, in eastern Austria May 8, 2008. Fritzl, a 73-year-old electrical engineer, lured his daughter Elisabeth into a basement in 1984, drugged her and locked her up before abusing her for almost a quarter of a century and fathering her seven children. Three of the children remained locked up with their mother in the basement and never saw sunlight until their fate was revealed nearly two weeks ago.
REUTERS/Herbert Neubauer (AUSTRIA) 

Police work in the backyard of a house in Amstetten, where Josef Fritzl imprisoned his daughter for 24 years, in eastern Austria May 8, 2008. Fritzl, a 73-year-old electrical engineer, lured his daughter Elisabeth into a basement in 1984, drugged her and locked her up before abusing her for almost a quarter of a century and fathering her seven children. Three of the children remained locked up with their mother in the basement and never saw sunlight until their fate was revealed nearly two weeks ago.
REUTERS/Herbert Neubauer (AUSTRIA) 

A police officer with a sniffer dog arrives in the backyard of a house in Amstetten where Josef Fritzl imprisoned his daughter for 24 years, in eastern Austria May 8, 2008. Fritzl, a 73-year-old electrical engineer, lured his daughter Elisabeth into a basement in 1984, drugged her and locked her up before abusing her for almost a quarter of a century and fathering her seven children. Three of the children remained locked up with their mother in the basement and never saw sunlight until their fate was revealed nearly two weeks ago.
REUTERS/Herbert Neubauer (AUSTRIA) 

Children hold a banner during a demonstration of solidarity with victims of violence in Amstetten where Josef Fritzl imprisoned his daughter for 24 years May 7, 2008. Austria's justice minister said local authorities were gullible in their dealings with Fritzl, who lured his daughter Elisabeth into a basement in 1984, drugging her and locking her up before abusing her for almost a quarter of a century and fathering her seven children. Fritzl claimed his missing daughter had left home to join a sect. The comments from Justice Minister Maria Berger were the first time the government has acknowledged official shortcomings in the handling of the case. The word "Liebe" means "Love". REUTERS/Heinz-Peter Bader (AUSTRIA) 

People hold banners during a demonstration of solidarity with victims of violence in Amstetten where Josef Fritzl imprisoned his daughter for 24 years May 7, 2008. Austria's justice minister said local authorities were gullible in their dealings with Fritzl, who lured his daughter Elisabeth into a basement in 1984, drugging her and locking her up before abusing her for almost a quarter of a century and fathering her seven children. Fritzl claimed his missing daughter had left home to join a sect. The comments from Justice Minister Maria Berger were the first time the government has acknowledged official shortcomings in the handling of the case. The word "Hoffnung" means "Hope". REUTERS/Heinz-Peter Bader (AUSTRIA) 

People hold banners during a demonstration of solidarity with victims of violence in Amstetten where Josef Fritzl imprisoned his daughter for 24 years May 7, 2008. Austria's justice minister said local authorities were gullible in their dealings with Fritzl, who lured his daughter Elisabeth into a basement in 1984, drugging her and locking her up before abusing her for almost a quarter of a century and fathering her seven children. Fritzl claimed his missing daughter had left home to join a sect. The comments from Justice Minister Maria Berger were the first time the government has acknowledged official shortcomings in the handling of the case. The words "Wir sind Amstetten" mean "We are Amstetten", "Zukunft" means "future" and "Warum" means "Why". REUTERS/Heinz-Peter Bader (AUSTRIA) 

People hold banners during a demonstration of solidarity with victims of violence in Amstetten where Josef Fritzl imprisoned his daughter for 24 years May 7, 2008. Austria's justice minister said local authorities were gullible in their dealings with Fritzl, who lured his daughter Elisabeth into a basement in 1984, drugging her and locking her up before abusing her for almost a quarter of a century and fathering her seven children. Fritzl claimed his missing daughter had left home to join a sect. The comments from Justice Minister Maria Berger were the first time the government has acknowledged official shortcomings in the handling of the case. The word "Zukunft" means "future" and "Warum" means "Why". REUTERS/Heinz-Peter Bader (AUSTRIA) 

The house in Amstetten, where Josef Fritzl imprisoned his daughter for 24 years, is pictured behind a fence in eastern Austria May 7, 2008. Austria's justice minister said local authorities were gullible in their dealings with Fritzl, who lured his daughter Elisabeth into a basement in 1984, drugging her and locking her up before abusing her for almost a quarter of a century and fathering her seven children. Fritzl claimed his missing daughter had left home to join a sect. The comments from Justice Minister Maria Berger were the first time the government has acknowledged official shortcomings in the handling of the case.
REUTERS/Heinz-Peter Bader (AUSTRIA) 

The house in Amstetten, where Josef Fritzl imprisoned his daughter for 24 years, is pictured behind a fence in eastern Austria May 7, 2008. Austria's justice minister said local authorities were gullible in their dealings with Fritzl, who lured his daughter Elisabeth into a basement in 1984, drugging her and locking her up before abusing her for almost a quarter of a century and fathering her seven children. Fritzl claimed his missing daughter had left home to join a sect. The comments from Justice Minister Maria Berger were the first time the government has acknowledged official shortcomings in the handling of the case.
REUTERS/Heinz-Peter Bader (AUSTRIA) 

A police helicopter flies over a house in Amstetten May 6, 2008. Josef Fritzl, who held his daughter captive for 24 years and fathered seven children with her had planned the construction of her basement prison years in advance, police said on Monday. REUTERS/Herwig Prammer (AUSTRIA) 

Police investigators arrive at a house in Amstetten May 6, 2008. Josef Fritzl, who held his daughter captive for 24 years and fathered seven children with her had planned the construction of her basement prison years in advance, police said on Monday. REUTERS/Herwig Prammer (AUSTRIA) 

A nun looks at a house as it rains in Amstetten May 6, 2008. Josef Fritzl, who held his daughter captive for 24 years and fathered seven children with her had planned the construction of her basement prison years in advance, police said on Monday. REUTERS/Herwig Prammer (AUSTRIA) 

A nun looks at a house as it rains in Amstetten May 6, 2008. Josef Fritzl, who held his daughter captive for 24 years and fathered seven children with her had planned the construction of her basement prison years in advance, police said on Monday. REUTERS/Herwig Prammer (AUSTRIA) 

Police officers stand on the roof of a house in Amstetten May 6, 2008. Josef Fritzl, who held his daughter captive for 24 years and fathered seven children with her had planned the construction of her basement prison years in advance, police said on Monday. REUTERS/Herwig Prammer (AUSTRIA) 

Police stands on the roof of a house in Amstetten May 6, 2008. Josef Fritzl, who held his daughter captive for 24 years and fathered seven children with her had planned the construction of her basement prison years in advance, police said on Monday. REUTERS/Herwig Prammer (AUSTRIA) 

People walk past a huge banner with messages of support for Elisabeth Fritzl, who was imprisoned by her father Josef Fritzl for 24 years, in Amstetten in eastern Austria May 5, 2008. Josef Fritzl, 73, has admitted keeping his daughter in a cellar for 24 years and fathering her seven children. Three of her children had spent their entire lives underground until the case was uncovered just over a week ago. REUTERS/Herbert Neubauer (AUSTRIA) 

A huge banner with messages of support for Elisabeth Fritzl, who was imprisoned by her father Josef Fritzl for 24 years, is seen in Amstetten in eastern Austria May 5, 2008. Josef Fritzl, 73, has admitted keeping his daughter in a cellar for 24 years and fathering her seven children. Three of her children had spent their entire lives underground until the case was uncovered just over a week ago. REUTERS/Herbert Neubauer (AUSTRIA)