Members of Scotland Yard clean an area during the search for missing British girl Madeleine McCann in Praia da Luz, near Lagos, June 7, 2014. McCann was three when she disappeared from her room at the Praia da Luz holiday resort in the Algarve in May 2007 while her parents were dining with friends at a nearby restaurant, prompting a global hunt and worldwide headlines. REUTERS/Carlos Vidigal (PORTUGAL - Tags: SOCIETY CRIME LAW) 

A mannequin depicting missing British girl Madeleine McCann stands in front of a church in Praia da Luz, southern Portugal May 3, 2008. Madeleine McCann vanished from the family holiday apartment in Praia da Luz, Portugal, on May 3, 2007. Her family and friends are marking the one year anniversary with church services in Praia da Luz and Rothley which will be dedicated to all missing children, including Madeleine. REUTERS/Hugo Correia (PORTUGAL) 

A picture of missing British girl Madeleine McCann hangs on a war memorial in the centre of Rothley, central England May 3, 2008. Madeleine McCann vanished from the family holiday apartment in Praia da Luz, Portugal, on May 3, 2007. Her family and friends are marking the one year anniversary with church services in Praia da Luz and Rothley which will be dedicated to all missing children, including Madeleine. REUTERS/Darren Staples (BRITAIN) 

Clarence Mitchell, the spokesman of Kate and Gerry McCann, the parents of missing British girl Madeleine McCann, shows a sketch of a man believed to have abducted Madeleine from the family's apartment in Praia da Luz in Portugal, during a news conference in London January 20, 2008. REUTERS/Alessia Pierdomenico (BRITAIN) 

Gerry McCann, father of missing British girl Madeleine McCann, returns to work at Glenfield Hospital in Leicester, central England November 1, 2007. REUTERS/Darren Staples (BRITAIN) 

Kate McCann, the mother of missing British girl Madeleine McCann, leaves the Catholic Church of Sacred Heart in Rothley, central England September 23, 2007. REUTERS/Darren Staples (BRITAIN) 

Crematory ovens, owned by Evert Hendrik, are seen in Monchique September 20, 2007. Portuguese police on Thursday searched an animal crematorium about 50 km (30 miles) from the Praia da Luz resort where four-year-old Briton Madeleine McCann went missing four months ago, Hendrik said. Hendrik said Portuguese authorities ordered the closure of the crematorium in 2006. REUTERS/Stringer (PORTUGAL) 

Kate McCann the mother of missing British girl Madeleine McCann enters the Catholic Church of Sacred Heart in Rothley, central England September 16, 2007. REUTERS/Darren Staples (BRITAIN) 

A picture of missing British girl Madeleine McCann (R) is displayed next to pictures of other missing children outside the British Embassy in Buenos Aires June 11, 2007. REUTERS/Marcos Brindicci (ARGENTINA) 

Kate McCann, mother of missing child Madeleine McCann, holds a toy and children's book as she arrives for a mass at a church near the Portuguese beach resort of Lagos June 3, 2007. REUTERS/Nacho Doce (PORTUGAL) 

Kate McCann, mother of missing child Madeleine McCann, walks out from a mass at a church near the Portuguese beach resort of Lagos June 3, 2007. REUTERS/Nacho Doce (PORTUGAL) 

Gerry (R) and Kate McCann, parents of Madeleine McCann, walk out from a mass at a church near the Portuguese beach resort of Lagos June 3, 2007. REUTERS/Nacho Doce (PORTUGAL) 

Gerry (R) and Kate McCann, parents of Madeleine McCann, walk out from a mass at a church near the Portuguese beach resort of Lagos June 3, 2007. REUTERS/Nacho Doce (PORTUGAL) 

Gerry (R) and Kate McCann, parents of Madeleine McCann, walks out from a mass at a church near the Portuguese beach resort of Lagos June 3, 2007. REUTERS/Nacho Doce (PORTUGAL) 

A poster of missing four-year-old Madeleine McCann is seen on a Police Republican Guard near Lagos June 2, 2007. REUTERS/Nacho Doce (PORTUGAL) 

Madeleine McCann's picture, along with a stuffed animal with her initials, are attached to the gate of the Church of Nossa Senhora da Luz near Lagos June 2, 2007. REUTERS/Nacho Doce (PORTUGAL) 

Gerry (L) and Kate McCann, parents of Madeleine McCann, leave after holding a news conference at a Madrid hotel June 1, 2007. The parents of a four-year-old British girl snatched from a Portuguese holiday resort nearly a month ago visited Madrid after meeting with the Pope on Wednesday. REUTERS/Stringer/spain (SPAIN) 

Kate McCann, mother of Madeleine McCann, sits by a poster of her daughter during a news conference at a Madrid hotel June 1, 2007.The parents of the four-year-old British girl snatched from a Portuguese holiday resort nearly a month ago visited Madrid after meeting with the Pope on Wednesday.REUTERS/Stringer (SPAIN) 

Gerry (L) and Kate McCann, parents of Madeleine McCann, hold hands during a news conference at a Madrid hotel June 1, 2007. The parents of the four-year-old British girl snatched from a Portuguese holiday resort nearly a month ago visited Madrid after meeting with the Pope on Wednesday. REUTERS/Stringer (SPAIN) 

Gerry (L) and Kate McCann, parents of Madeleine McCann, hold a news conference at a Madrid hotel June 1, 2007.The parents of the four-year-old British girl snatched from a Portuguese holiday resort nearly a month ago visited Madrid after meeting with the Pope on Wednesday.REUTERS/Stringer (SPAIN) 

Kate McCann, mother of Madeleine McCann, sits by a poster of her daughter during a news conference at a Madrid hotel June 1, 2007.The parents of the four-year-old British girl snatched from a Portuguese holiday resort nearly a month ago visited Madrid after meeting with the Pope on Wednesday.REUTERS/Stringer (SPAIN) 

Gerry McCann, father of Madeleine McCann, shows a photo of his daughter during a news conference at a Madrid hotel June 1, 2007.The parents of the four-year-old British girl snatched from a Portuguese holiday resort nearly a month ago visited Madrid after meeting with the Pope on Wednesday.REUTERS/Stringer (SPAIN) 

Gerry (L) and Kate McCann, parents of Madeleine McCann, walk near the Portuguese beach resort of Lagos with their children, Amelie and Sean, May 31, 2007. Pope Benedict on Wednesday comforted the parents of a four-year-old British girl snatched from a Portuguese holiday resort and blessed a photograph of the child held up by her mother. REUTERS/Nacho Doce (PORTUGAL) 

Gerry (L) and Kate McCann, parents of Madeleine McCann, walk near the Portuguese beach resort of Lagos with their children, Amelie and Sean, May 31, 2007. Pope Benedict on Wednesday comforted the parents of a four-year-old British girl snatched from a Portuguese holiday resort and blessed a photograph of the child held up by her mother. REUTERS/Nacho Doce (PORTUGAL) 

Kate McCann, mother of Madeleine McCann, walks near the Portuguese beach resort of Lagos with her children, Amelie and Sean, May 31, 2007. Pope Benedict on Wednesday comforted the parents of a four-year-old British girl snatched from a Portuguese holiday resort and blessed a photograph of the child held up by her mother. REUTERS/Nacho Doce (PORTUGAL) 

Gerry (L) and Kate McCann, parents of Madeleine 'Maddy' McCann, walk near the Portuguese beach resort of Lagos with their children, Amelie and Sean, May 31, 2007. Pope Benedict on Wednesday comforted the parents of a four-year-old British girl snatched from a Portuguese holiday resort and blessed a photograph of the child held up by her mother. REUTERS/Nacho Doce (PORTUGAL) 

Gerry (L) and Kate McCann, parents of Madeleine McCann, walk near the Portuguese beach resort of Lagos with their children, Amelie and Sean, May 31, 2007. Pope Benedict on Wednesday comforted the parents of the four-year-old British girl snatched from a Portuguese holiday resort and blessed a photograph of the child held up by her mother. REUTERS/Nacho Doce (PORTUGAL) 

Pope Benedict XVI blesses a photo of 4-year-old abducted British girl Madeleine 'Maddy' McCann, while meeting her parents Gerry and Kate McCann, after his weekly general audience at the Vatican May 30, 2007. The parents of a four-year-old British girl snatched from a Portuguese holiday resort nearly a month ago met Pope Benedict on Wednesday and the Pontiff blessed a photograph of the child. The mother of Madeleine McCann appeared to be holding back tears as she held up the picture of her daughter, which the Pope touched gently and then blessed with the sign of the cross. REUTERS/Osservatore Romano (VATICAN) 

Pope Benedict XVI blesses a photo of four-year-old abducted British girl Madeleine McCann, while meeting her parents Gerry (R) and Kate McCann (2nd R), after his weekly general audience at the Vatican May 30, 2007. The parents of a four-year-old British girl snatched from a Portuguese holiday resort nearly a month ago met Pope Benedict on Wednesday and the Pontiff blessed a photograph of the child. The mother of Madeleine McCann appeared to be holding back tears as she held up the picture of her daughter, which the Pope touched gently and then blessed with the sign of the cross. REUTERS/Osservatore Romano (VATICAN) 

Pope Benedict XVI blesses a photo of 4-year-old abducted British girl Madeleine McCann, while meeting her mother Kate McCann (R), after his weekly general audience at the Vatican May 30, 2007. The parents of a four-year-old British girl snatched from a Portuguese holiday resort nearly a month ago met Pope Benedict on Wednesday and the Pontiff blessed a photograph of the child. The mother of Madeleine McCann appeared to be holding back tears as she held up the picture of her daughter, which the Pope touched gently and then blessed with the sign of the cross. REUTERS/Osservatore Romano (VATICAN) 

Gerry (R) and Kate McCann, parents of Madeleine McCann, hold up a photo of their abducted daughter during a press conference after their meeting with Pope Benedict, in Rome May 30, 2007. The parents of a four-year-old British girl snatched from a Portuguese holiday resort nearly a month ago met the Pope on Wednesday and the Pontiff blessed a photograph of the child. REUTERS/Chris Helgren (ITALY) 

Kate McCann, mother of Madeleine McCann, attends a press conference as her husband Gerry (unseen) holds up a photo of their abducted daughter after their meeting with Pope Benedict, in Rome May 30, 2007. The parents of a four-year-old British girl snatched from a Portuguese holiday resort nearly a month ago met the Pope on Wednesday and the Pontiff blessed a photograph of the child. REUTERS/Chris Helgren (ITALY) 

Kate McCann, mother of Madeleine 'Maddy' McCann, attends a press conference as her husband Gerry (unseen) holds up a photo of their abducted daughter after their meeting with Pope Benedict, in Rome May 30, 2007. The parents of a four-year-old British girl snatched from a Portuguese holiday resort nearly a month ago met the Pope on Wednesday and the Pontiff blessed a photograph of the child. REUTERS/Chris Helgren (ITALY) 

Kate McCann, mother of Madeleine McCann, attends a press conference after a meeting with Pope Benedict, in Rome May 30, 2007. The parents of a four-year-old British girl snatched from a Portuguese holiday resort nearly a month ago met the Pope on Wednesday and the Pontiff blessed a photograph of the child. REUTERS/Chris Helgren (ITALY) 

Gerry (R) and Kate McCann, parents of Madeleine McCann, hold up a photo of their abducted daughter during a press conference after their meeting with Pope Benedict, in Rome May 30, 2007. The parents of a four-year-old British girl snatched from a Portuguese holiday resort nearly a month ago met the Pope on Wednesday and the Pontiff blessed a photograph of the child. REUTERS/Chris Helgren (ITALY) 

Pope Benedict XVI greets the parents of four-year-old abducted British girl Madeleine McCann, Gerry (R) and Kate (2nd R) McCann, after his weekly general audience at the Vatican May 30, 2007. The parents of a four-year-old British girl snatched from a Portuguese holiday resort nearly a month ago met Pope Benedict on Wednesday and the Pontiff blessed a photograph of the child. The mother of Madeleine McCann appeared to be holding back tears as she held up the picture of her daughter, which the Pope touched gently and then blessed with the sign of the cross. REUTERS/Osservatore Romano (VATICAN) 

Pope Benedict XVI blesses a photo of four-year-old abducted British girl Madeleine McCann, while meeting her parents Gerry (R) and Kate (2nd R) McCann, after his weekly general audience at the Vatican May 30, 2007. The parents of a four-year-old British girl snatched from a Portuguese holiday resort nearly a month ago met Pope Benedict on Wednesday and the Pontiff blessed a photograph of the child. The mother of Madeleine McCann appeared to be holding back tears as she held up the picture of her daughter, which the Pope touched gently and then blessed with the sign of the cross. REUTERS/Osservatore Romano (VATICAN) 

Pope Benedict XVI blesses a photo of four-year-old abducted British girl Madeleine 'Maddy' McCann, while meeting her parents Gerry (R) and Kate McCann (2nd R), after his weekly general audience at the Vatican May 30, 2007. The parents of a four-year-old British girl snatched from a Portuguese holiday resort nearly a month ago met Pope Benedict on Wednesday and the Pontiff blessed a photograph of the child. The mother of Madeleine McCann appeared to be holding back tears as she held up the picture of her daughter, which the Pope touched gently and then blessed with the sign of the cross. REUTERS/Osservatore Romano (VATICAN) 

Gerry and Kate McCann, parents of Madeleine McCann, attend Pope Benedict XVI's weekly general audience at the Vatican May 30, 2007. REUTERS/Dario Pignatelli (VATICAN) 

Gerry and Kate McCann, parents of Madeleine McCann, attend Pope Benedict XVI's weekly general audience at the Vatican May 30, 2007. REUTERS/Dario Pignatelli (VATICAN) 

Gerry and Kate McCann, parents of Madeleine McCann, attend Pope Benedict XVI's weekly general audience at the Vatican May 30, 2007. REUTERS/Dario Pignatelli (VATICAN) 

Gerry (L) and Kate (2nd L) McCann, parents of Madeleine McCann, leave Saint Peter's square after attending Pope Benedict XVI's weekly general audience at the Vatican May 30, 2007. The four-year-old British girl was snatched from a Portuguese holiday resort three weeks ago. REUTERS/Dario Pignatelli (VATICAN) 

Gerry and Kate McCann, parents of Madeleine McCann, talk to a priest as they attend Pope Benedict XVI's weekly general audience at the Vatican May 30, 2007. REUTERS/Dario Pignatelli (VATICAN) 

Gerry (L) and Kate McCann, parents of Madeleine McCann, arrive at Saint Peter's square to attend Pope Benedict XVI weekly general audience at the Vatican May 30, 2007. The four-year-old British girl was snatched from a Portuguese holiday resort three weeks ago. REUTERS/Dario Pignatelli (VATICAN) 

Gerry (R) and Kate McCann, parents of Madeleine McCann, arrive near the Vatican's St. Peter's Basilica (at rear), ahead of their meeting with Pope Benedict, in Rome May 30, 2007. The parents of abducted 4-year-old Madeleine McCann are due to meet the Pope in the Vatican on Wednesday at the end of his weekly general audience. REUTERS/Chris Helgren (ITALY) 

Gerry (R) and Kate McCann, parents of Madeleine McCann, arrive near the Vatican's St. Peter's Basilica (at rear), ahead of their meeting with Pope Benedict, in Rome May 30, 2007. The parents of abducted 4-year-old Madeleine McCann are due to meet the Pope in the Vatican on Wednesday at the end of his weekly general audience. REUTERS/Chris Helgren (ITALY) 

Gerry (L) and Kate McCann, parents of Madeleine McCann, arrive near the Vatican's St. Peter's Basilica (at rear), ahead of their meeting with Pope Benedict, in Rome May 30, 2007. The parents of abducted 4-year-old Madeleine McCann are due to meet the Pope in the Vatican on Wednesday at the end of his weekly general audience. REUTERS/Chris Helgren (ITALY)