Argentine prosecutor Alberto Nisman's ex-wife has claimed that independent forensic tests show he was murdered.

The investigator had accused the president of plotting to cover up Iran's alleged role in a 1994 bombing.

Nisman was found dead, a bullet in his head and pistol by his side, at home in Buenos Aires in January.

Investigator: Prosecutor found dead had drafted arrest warrant for Argentina’s president

Officials investigating the death of Argentine prosecutor Alberto Nisman confirm that he had drafted an arrest warrant for Argentina’s president Cristina Fernandez. The warrant, found in Nisman’s home, was drafted in connection to the 1994 bombing of a Jewish center in Buenos Aires.