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What is known about Alberto Nisman's death? What is known about Alberto Nisman's death?
(about 14 hours later)
The death on 18 January of Argentine top prosecutor Alberto Nisman has led to fevered speculation in Argentina and abroad.The death on 18 January of Argentine top prosecutor Alberto Nisman has led to fevered speculation in Argentina and abroad.
Speculation about the cause of his death emerged almost immediately as Mr Nisman had been due to give details of controversial allegations against President Cristina Fernandez de Kirchner and other high-ranking officials.Speculation about the cause of his death emerged almost immediately as Mr Nisman had been due to give details of controversial allegations against President Cristina Fernandez de Kirchner and other high-ranking officials.
He had accused them of involvement in a plot to cover up Iran's alleged role in the 1994 bombing of a Jewish community centre in Buenos Aires.He had accused them of involvement in a plot to cover up Iran's alleged role in the 1994 bombing of a Jewish community centre in Buenos Aires.
Cristina Fernandez herself has cast doubts on the theory that his death was suicide.Cristina Fernandez herself has cast doubts on the theory that his death was suicide.
Here we look at what investigators have revealed so far and the leads they are probing.Here we look at what investigators have revealed so far and the leads they are probing.
What happened on Sunday 18 January?What happened on Sunday 18 January?
According to investigators, Alberto Nisman's bodyguards contacted his mother after he failed to answer their phone calls.According to investigators, Alberto Nisman's bodyguards contacted his mother after he failed to answer their phone calls.
She went to his apartment but was unable to open the main door because she did not have the door code. She went to his flat but was unable to open the main door because she did not have the door code.
She tried the service door, which had a conventional lock. But a key had been placed in the lock from the inside, which prevented her from turning her key.She tried the service door, which had a conventional lock. But a key had been placed in the lock from the inside, which prevented her from turning her key.
A locksmith was called and quickly managed to open the door by dislodging the key on the inside with the help of a wire.A locksmith was called and quickly managed to open the door by dislodging the key on the inside with the help of a wire.
He later told the media that the door had been closed but not locked.He later told the media that the door had been closed but not locked.
What did they find?What did they find?
His mother and a bodyguard found the body of Mr Nisman in a pool of blood in the bathroom, investigating prosecutor Viviana Fein said.His mother and a bodyguard found the body of Mr Nisman in a pool of blood in the bathroom, investigating prosecutor Viviana Fein said.
A gun and a spent cartridge were found lying nearby on the floor.A gun and a spent cartridge were found lying nearby on the floor.
What did the investigating prosecutor say?What did the investigating prosecutor say?
Speaking on 19 January, a day after Mr Nisman's body was found, investigating prosecutor Viviana Fein said his death was "suspicious", but there was no indication of an "outside link" or the involvement of anyone else in his death.Speaking on 19 January, a day after Mr Nisman's body was found, investigating prosecutor Viviana Fein said his death was "suspicious", but there was no indication of an "outside link" or the involvement of anyone else in his death.
She did not rule out that he might have been "induced" to take his own life, though.She did not rule out that he might have been "induced" to take his own life, though.
"We're going to investigate if there was any kind of instigation to suicide through threats, be they through phone calls or text messages," she said."We're going to investigate if there was any kind of instigation to suicide through threats, be they through phone calls or text messages," she said.
She said suicide was the most likely cause.She said suicide was the most likely cause.
"We could talk about a suicide, the body was not beaten or mistreated, but we're not saying this is definitely the cause.""We could talk about a suicide, the body was not beaten or mistreated, but we're not saying this is definitely the cause."
What did the autopsy and other tests reveal?What did the autopsy and other tests reveal?
Mr Nisman died of a single gunshot wound to his right temple.Mr Nisman died of a single gunshot wound to his right temple.
The bullet which killed Mr Nisman was fired at close range from the gun discovered by his side, ballistic tests suggested.The bullet which killed Mr Nisman was fired at close range from the gun discovered by his side, ballistic tests suggested.
But when experts tested Mr Nisman's hands for traces of gunpowder, the test came out negative.But when experts tested Mr Nisman's hands for traces of gunpowder, the test came out negative.
But investigating prosecutor Viviana Fein told local radio the result was "not surprising".But investigating prosecutor Viviana Fein told local radio the result was "not surprising".
"Because it's a small calibre gun, a calibre .22 (...) this usually means that the gunshot residue test does not come out positive.""Because it's a small calibre gun, a calibre .22 (...) this usually means that the gunshot residue test does not come out positive."
Where did the gun come from?Where did the gun come from?
The gun belonged to an IT specialist, Diego Lagomarsino, who worked for Mr Nisman.The gun belonged to an IT specialist, Diego Lagomarsino, who worked for Mr Nisman.
Mr Lagomarsino said Mr Nisman asked to borrow his gun on 17 January, the day before his death.Mr Lagomarsino said Mr Nisman asked to borrow his gun on 17 January, the day before his death.
Mr Lagomarsino went to the investigating judge on Monday voluntarily to tell her about the gun. He has been assigned a police guard for his own protection.Mr Lagomarsino went to the investigating judge on Monday voluntarily to tell her about the gun. He has been assigned a police guard for his own protection.
What evidence was found in the apartment?What evidence was found in the apartment?
Investigators said there were three possible ways to enter the apartment: Investigators said there were three possible ways to enter the flat:
According to the investigators, there were recent footprints and a fingerprint inside the air conditioning passageway. They are being tested.According to the investigators, there were recent footprints and a fingerprint inside the air conditioning passageway. They are being tested.
Viviana Fein had previously said there were no traces of a burglary or signs of any of the doors being forced open.Viviana Fein had previously said there were no traces of a burglary or signs of any of the doors being forced open.
What state of mind was Mr Nisman in?What state of mind was Mr Nisman in?
No suicide note was found and friends and relatives of Mr Nisman said he shown no signs of planning to take his life.No suicide note was found and friends and relatives of Mr Nisman said he shown no signs of planning to take his life.
Congresswoman Cornelia Schmidt-Liermann, who had been due to collect Mr Nisman from his home and accompany him on Monday when was due to give his testimony, said: "Everybody who had contact with him the last 24 hours says he was confident. There is no indication, under any circumstances, that he killed himself."Congresswoman Cornelia Schmidt-Liermann, who had been due to collect Mr Nisman from his home and accompany him on Monday when was due to give his testimony, said: "Everybody who had contact with him the last 24 hours says he was confident. There is no indication, under any circumstances, that he killed himself."
Asked by journalists if she thought Mr Nisman had killed himself, his ex-wife, Sandra Arroyo, said simply: "No".Asked by journalists if she thought Mr Nisman had killed himself, his ex-wife, Sandra Arroyo, said simply: "No".
Mr Nisman's mother, Sara Garfunkel, told Argentine daily Clarin she did not think her son's death was suicide.Mr Nisman's mother, Sara Garfunkel, told Argentine daily Clarin she did not think her son's death was suicide.
What other theories have been put forward about his death?What other theories have been put forward about his death?
The death of Mr Nisman, just hours before he was due to give details of his allegations against President Cristina Fernandez to a congressional committee, triggered outraged comments on social media networks.The death of Mr Nisman, just hours before he was due to give details of his allegations against President Cristina Fernandez to a congressional committee, triggered outraged comments on social media networks.
Many questioned whether the timing of his death was a coincidence.Many questioned whether the timing of his death was a coincidence.
Protesters held up placards reading "Enough, Cristina!" and some shouted "Murderer!" during demonstrations outside the presidential palace and the Amia Jewish community centre.Protesters held up placards reading "Enough, Cristina!" and some shouted "Murderer!" during demonstrations outside the presidential palace and the Amia Jewish community centre.
Opposition member of parliament Elisa Carrio told daily Clarin [in Spanish] that she was convinced Mr Nisman had been murdered and that "the government, the power" had had a role to play in his death.Opposition member of parliament Elisa Carrio told daily Clarin [in Spanish] that she was convinced Mr Nisman had been murdered and that "the government, the power" had had a role to play in his death.
"They killed him," she said. "I thought they stole and systematically lied, but I never thought they would be capable of killing," she added,"They killed him," she said. "I thought they stole and systematically lied, but I never thought they would be capable of killing," she added,
In a letter published on her website [in Spanish], President Fernandez put forward her own theory about Mr Nisman's death.In a letter published on her website [in Spanish], President Fernandez put forward her own theory about Mr Nisman's death.
"I'm convinced that it was not suicide," she wrote."I'm convinced that it was not suicide," she wrote.
She alleged that Mr Nisman was manipulated and fed false information to attack her and her government.She alleged that Mr Nisman was manipulated and fed false information to attack her and her government.
"Prosecutor Nisman's charges were never in themselves the true operation against the government. They collapsed early on. Nisman did not know it and probably never knew it," she wrote."Prosecutor Nisman's charges were never in themselves the true operation against the government. They collapsed early on. Nisman did not know it and probably never knew it," she wrote.
The president then goes on to allege that "the true operation against the government was the prosecutor's death after accusing the president, her foreign minister, and the secretary-general of (her political faction) of covering up for the Iranians accused in the AMIA attack".The president then goes on to allege that "the true operation against the government was the prosecutor's death after accusing the president, her foreign minister, and the secretary-general of (her political faction) of covering up for the Iranians accused in the AMIA attack".
However, she did not elaborate on who may have been behind the operation she was referring to.However, she did not elaborate on who may have been behind the operation she was referring to.