Alberto Nisman
Alberto NismanReuters

An Argentine prosecutor admitted on Thursday that Alberto Nisman, who investigated Argentina's worst terrorist attack before he was found dead in his home last year, may have been forced to kill himself, The Associated Press reports.

Viviana Fein, who in December was removed from the investigation of Nisman's mysterious death, had said before that it was likely suicide. But in an interview with local radio station La Red, she acknowledged for the first time that it's possible he was "induced" to kill himself.

The body of Nisman, who led the probe of the 1994 AMIA Jewish center bombing in Buenos Aires that killed 85 people, was discovered in his apartment in January of 2015, with a gunshot wound to the head.

It has been revealed that Nisman had drafted arrest warrants for then President Cristina Kirchner and Foreign Minister Hector Timerman before he was found dead.

Those warrants charged that Kirchner orchestrated a secret deal to cover up Iranian officials' alleged role in the attack. She denies the allegations.

After his death was initially labelled a suicide, his family – who insists he was murdered – commissioned its own independent forensic investigation.

In February, however, an Argentinian judicial official confirmed that Nisman was murdered and said he had been the victim of a “homicide.”