Members of an all-women funeral company carry the coffin of Tori Johnson, manager of the Lindt cafe involved in the Sydney siege, following his funeral at St Stephens Uniting Church in Sydney, December 23, 2014. A funeral for Johnson and memorial for fellow siege victim, lawyer Katrina Dawson were held on Tuesday, one week after both died in the siege. REUTERS/Jason Reed (AUSTRALIA - Tags: CRIME LAW OBITUARY) 

Members of an all-women funeral company carry the coffin of Tori Johnson, manager of the Lindt cafe involved in the Sydney siege, following his funeral at St Stephens Uniting Church in Sydney, December 23, 2014. A funeral for Johnson and memorial for fellow siege victim, lawyer Katrina Dawson were held on Tuesday, one week after being killed in the siege. REUTERS/Jason Reed (AUSTRALIA - Tags: CRIME LAW OBITUARY TPX IMAGES OF THE DAY) 

Members of an all-woman funeral company bring sunflowers out of St Stephens Uniting Church in Sydney, December 23, 2014. following the funeral of Sydney cafe siege victim, cafe manager Tori Johnson. A funeral for Johnson and memorial for fellow siege victim, lawyer Katrina Dawson were held on Tuesday, one week after being killed in the siege. REUTERS/Jason Reed (AUSTRALIA - Tags: CRIME LAW OBITUARY) 

Tibetan monks pray as the hearse carrying Sydney cafe siege victim Tori Johnson is driven from his funeral at St Stephens Uniting Church in Sydney, December 23, 2014. Two hostages and the hostage taker died when police stormed a cafe in the early hours last Tuesday, December 16, 2014. Cafe manager, Johnson, and mother of three and senior lawyer, Katrina Dawson died along with the hostage taker, Man Haron Monis. A funeral for Johnson and memorial for fellow siege victim, Dawson were held on Tuesday, one week after being killed in the siege. REUTERS/Jason Reed (AUSTRALIA - Tags: CRIME LAW OBITUARY CIVIL UNREST RELIGION) 

Mourners react as they leave the funeral of Sydney cafe siege victim, cafe manager Tori Johnson at St Stephens Uniting Church in Sydney, December 23, 2014. A funeral for Johnson and memorial for fellow siege victim, lawyer Katrina Dawson were held on Tuesday, one week after being killed in the siege. REUTERS/Jason Reed (AUSTRALIA - Tags: CRIME LAW OBITUARY) 

Mourners react as they leave the funeral of Sydney cafe siege victim, cafe manager Tori Johnson at St Stephens Uniting Church in Sydney, December 23, 2014. A funeral for Johnson and memorial for fellow siege victim, lawyer Katrina Dawson were held on Tuesday, one week after being killed in the siege. REUTERS/Jason Reed (AUSTRALIA - Tags: CRIME LAW OBITUARY) 

Mourners react as they leave the funeral of Sydney cafe siege victim, cafe manager Tori Johnson at St Stephens Uniting Church in Sydney, December 23, 2014. A funeral for Johnson and memorial for fellow siege victim, lawyer Katrina Dawson were held on Tuesday, one week after being killed in the siege. REUTERS/Jason Reed (AUSTRALIA - Tags: CRIME LAW OBITUARY) 

Photographs of Sydney's cafe siege victims, lawyer Katrina Dawson (L) and cafe manager Tori Johnson are displayed in a floral tribute near the site of the siege in Sydney's Martin Place, December 23, 2014. A funeral for Johnson and memorial for fellow siege victim, lawyer Katrina Dawson were held on Tuesday, one week after both died in the siege. REUTERS/Jason Reed (AUSTRALIA - Tags: CRIME LAW OBITUARY) 

An image of Sydney cafe siege victim, cafe manager Tori Johnson is projected on a giant screen at his funeral at St Stephens Uniting Church in Sydney, December 23, 2014. A funeral for Johnson and memorial for fellow siege victim, lawyer Katrina Dawson were held on Tuesday, one week after being killed in the siege. REUTERS/Jason Reed (AUSTRALIA - Tags: CRIME LAW OBITUARY) 

Women in angel costumes marching around the site of the Sydney cafe siege line up to receive an embrace from a man giving out 'free hugs' to those mourning the victims of the incident in Sydney's Martin Place, December 18, 2014. Australian Prime Minister Tony Abbott on Wednesday ordered a sweeping investigation into a deadly hostage siege after tough new security laws and the courts failed to stop a convicted felon from walking into a Sydney cafe with a concealed shotgun. REUTERS/Jason Reed (AUSTRALIA - Tags: CRIME LAW SOCIETY TPX IMAGES OF THE DAY) 

Customers dine at the Lindt cafe on Sydney's George Street, December 18, 2014, which opened its doors for the first time on Thursday following a siege at Lindt's nearby Martin Place outlet. The Lindt cafe at Martin Place remains closed during police forensic investigations. Australian Prime Minister Tony Abbott on Wednesday ordered a sweeping investigation into the deadly hostage siege after tough new security laws and the courts failed to stop a convicted felon from walking into the Sydney cafe with a concealed shotgun. REUTERS/Jason Reed (AUSTRALIA - Tags: SOCIETY) 

A business card bearing the name of Sydney siege victim, Lindt Cafe store manager Tori Johnson, is pictured among photos of him wearing a red shirt at an impromptu memorial in Martin Place December 17, 2014. Tough new national security laws failed to prevent a deadly hostage crisis in the heart of Sydney this week, Australian Prime Minister Tony Abbott said on Wednesday, raising questions about the usefulness of such measures. REUTERS/Jason Reed (AUSTRALIA - Tags: CRIME LAW POLITICS CIVIL UNREST TPX IMAGES OF THE DAY) 

The windows of a Lindt cafe are taped up in Sydney's Martin Place December 18, 2014. Australian Prime Minister Tony Abbott on Wednesday ordered a sweeping investigation into a deadly hostage siege after tough new security laws and the courts failed to stop a convicted felon from walking into a Sydney cafe with a concealed shotgun. REUTERS/Jason Reed (AUSTRALIA - Tags: CRIME LAW) 

Members of the public observe the thousands of floral tributes left near the site of the Sydney cafe siege in Martin Place December 17, 2014. Tough new national security laws failed to prevent a deadly hostage crisis in the heart of Sydney this week, Australian Prime Minister Tony Abbott said on Wednesday, raising questions about the usefulness of such measures. REUTERS/Jason Reed (AUSTRALIA - Tags: POLITICS CIVIL UNREST CRIME LAW TPX IMAGES OF THE DAY) 

Australian Prime Minister Tony Abbott and his wife Margie prepare to place floral tributes near the cafe in central Sydney December 16, 2014 where hostages were held for over 16-hours. Heavily armed Australian police stormed a Sydney cafe early on Tuesday morning and freed a number of hostages being held there at gunpoint, in a dramatic end to a 16-hour siege in which three people including the attacker were killed. REUTERS/David Gray (AUSTRALIA - Tags: CIVIL UNREST POLITICS) 

Members of the Australian Muslim community place floral tributes amongst thousands of others near the Lindt cafe, where hostages were held for over 16-hours, in central Sydney December 16, 2014. Heavily armed Australian police stormed the Sydney cafe early on Tuesday morning and freed a number of hostages being held there at gunpoint, in a dramatic end to a 16-hour siege in which three people including the attacker were killed. REUTERS/David Gray (AUSTRALIA - Tags: CIVIL UNREST CRIME LAW) 

People observe floral tributes left for victims of the Sydney cafe siege in Martin Place December 17, 2014. Tough new national security laws failed to prevent a deadly hostage crisis in the heart of Sydney this week, Australian Prime Minister Tony Abbott said on Wednesday, raising questions about the usefulness of such measures. REUTERS/Jason Reed (AUSTRALIA - Tags: CRIME LAW POLITICS CIVIL UNREST) 

Members of the public write messages of condolence in chalk on the pavement near the site of the Sydney cafe siege in Martin Place, December 17, 2014. Tough new national security laws failed to prevent a deadly hostage crisis in the heart of Sydney this week, Australian Prime Minister Tony Abbott said on Wednesday, raising questions about the usefulness of such measures. REUTERS/Jason Reed (AUSTRALIA - Tags: CRIME LAW POLITICS CIVIL UNREST) 

A makeshift memorial featuring Lindt chocolate bears, an apron and personal message from the staff of Sydney's Lindt cafe to its staff member Tori Johnson, is shown on the pavement near the cafe in Martin Place, December 17, 2014. Johnson, the 34 year old manager of the cafe where a siege took place, and Katrina Dawson, a 38 year old mother and lawyer both lost their lives in the incident. Tough new national security laws failed to prevent a deadly hostage crisis in the heart of Sydney this week, Australian Prime Minister Tony Abbott said on Wednesday, raising questions about the usefulness of such measures. REUTERS/Jason Reed (AUSTRALIA - Tags: CRIME LAW POLITICS CIVIL UNREST) 

Members of the public stand behind a note that can be seen amongst floral tributes that have been placed near the cafe where hostages were held for over 16-hours, in central Sydney December 16, 2014. Heavily armed Australian police stormed a Sydney cafe early on Tuesday morning and freed a number of hostages being held there at gunpoint, in a dramatic end to a 16-hour siege in which three people including the attacker were killed. REUTERS/David Gray (AUSTRALIA - Tags: CIVIL UNREST POLITICS TPX IMAGES OF THE DAY) 

Floral tributes and personal notes written by members of the New South Wales police force are left on a fence near the site of the Sydney cafe siege in Martin Place, December 17, 2014. Tough new national security laws failed to prevent a deadly hostage crisis in the heart of Sydney this week, Australian Prime Minister Tony Abbott said on Wednesday, raising questions about the usefulness of such measures. REUTERS/Jason Reed (AUSTRALIA - Tags: CRIME LAW POLITICS CIVIL UNREST) 

New South Wales police officers guard a post near the fenced-off site of the siege at the Lindt cafe in Martin Place, Sydney, December 17, 2014. Tough new national security laws failed to prevent a deadly hostage crisis in the heart of Sydney this week, Australian Prime Minister Tony Abbott said on Wednesday, raising questions about the usefulness of such measures. REUTERS/Jason Reed (AUSTRALIA - Tags: CRIME LAW POLITICS CIVIL UNREST) 

New South Wales police officers wear protective masks as they place marker cones over potential evidence in their investigation into the Sydney cafe siege, December 16, 2014. Heavily armed Australian police stormed Lindt cafe in central Sydney on Tuesday and freed a number of hostages being held there at gunpoint, in a dramatic end to a 16-hour siege in which three people were killed and four wounded. REUTERS/Jason Reed (AUSTRALIA - Tags: CRIME LAW CIVIL UNREST) 

New South Wales police officers place marker cones over potential evidence among shattered glass during their investigation into the Sydney cafe siege, December 16, 2014. Heavily armed Australian police stormed Lindt cafe in central Sydney on Tuesday and freed a number of hostages being held there at gunpoint, in a dramatic end to a 16-hour siege in which three people were killed and four wounded. REUTERS/Jason Reed (AUSTRALIA - Tags: CRIME LAW CIVIL UNREST) 

Police rescue personnel carry an injured woman from the Lindt cafe, where hostages are being held, at Martin Place in central Sydney December 16, 2014. REUTERS/Jason Reed 

Paramedics remove a person, with bloodstains on the blankets covering the person, on a stretcher from the Lindt cafe, where hostages were being held, at Martin Place in central Sydney December 16, 2014. REUTERS/David Gray 

A bouquet is pictured inside a secured area at the scene of a hostage taking at Martin Place after it ended in Sydney early December 16, 2014. 

Sydney resident Kate Golder cries as she observes the site of a Sydney cafe siege after it ended in Martin Place, December 16, 2014. 

Hostages run past a police officer (C) near Lindt Cafe, at Martin Place in central Sydney December 16, 2014. REUTERS/Jason Reed 

A heavily armed policeman holds his weapon as paramedics rush towards the Lindt cafe, where hostages are being held, at Martin Place in central Sydney December 16, 2014. REUTERS/Jason Reed 

A police officer assists a man with his armored suit near Lindt Cafe in Martin Place in central Sydney December 16, 2014. 

Paramedics remove an injured woman on a stretcher from the Lindt cafe, where hostages were being held, at Martin Place in central Sydney December 16, 2014. REUTERS/David Gray 

A New South Wales police officer carries a bouquet under a police line as floral tributes are relocated during a change in police perimeter after a Sydney cafe siege ended December 16, 2014. 

Two heavily armed police officers assist a hostage away from Lindt Cafe in Martin Place in central Sydney December 16, 2014. REUTERS/Jason Reed 

A hostage runs towards a police officer outside Lindt cafe, where other hostages are being held, in Martin Place in central Sydney December 15, 2014. REUTERS/Jason Reed 

Hostages run towards a police officer (R) near Lindt Cafe, at Martin Place in central Sydney December 16, 2014. REUTERS/Jason Reed 

Police officers wearing armoured suits walk with a robot towards Lindt Cafe in Martin Place in central Sydney December 16, 2014. Australian security forces on Tuesday stormed the Sydney cafe where several hostages were being held at gunpoint, in what looked like the dramatic denouement to a standoff that had dragged on for more than 16 hours. REUTERS/Jason Reed (AUSTRALIA - Tags: CRIME LAW CIVIL UNREST) 

Police push back a member of the public who tried to get into a building located near the Lindt cafe, where hostages are being held, at Martin Place in central Sydney December 15, 2014. REUTERS/David Gray 

A hostage runs towards a police officer outside Lindt cafe, where other hostages are being held, in Martin Place in central Sydney December 15, 2014. REUTERS/Jason Reed 

A heavily armed police officer walks near Lindt cafe, where hostages are being held,in Martin Place in central Sydney December 15, 2014. REUTERS/David Gray 

A woman is seen in a window of the Lindt cafe, where hostages are being held, at Martin Place in central Sydney December 15, 2014. REUTERS/David Gray 

A New South Wales state police officer is seen at a corner near Lindt cafe in Martin Place, where hostages are being held, in central Sydney December 15, 2014. Hostages were being held inside the central Sydney cafe where a black flag with white Arabic writing could be seen in the window, local television showed on Monday, raising fears of an attack linked to Islamic militants. REUTERS/Jason Reed (AUSTRALIA - Tags: CRIME LAW TPX IMAGES OF THE DAY) 

Police use a ladder to evacuate people from a building near Lindt cafe, where hostages are being held, in Martin Place in central Sydney December 15, 2014. REUTERS/David Gray 

A police officer runs across Martin Place near Lindt cafe, where hostages are being held, in central Sydney December 15, 2014. REUTERS/David Gray 

A woman is assisted as a group of people are evacuated by police from a building next to Lindt cafe in Martin Place, where hostages are being held, in central Sydney December 15, 2014. REUTERS/David Gray 

People standing behind a police cordon look towards Lindt cafe in Martin Place, where hostages are being held, in central Sydney December 15, 2014.
REUTERS/David Gray 

Police officers position themselves at a corner near Lindt cafe in Martin Place, where hostages are being held, in central Sydney December 15, 2014. REUTERS/Jason Reed 

A police officer runs across Martin Place near Lindt cafe, where hostages are being held, in central Sydney December 15, 2014. REUTERS/David Gray