Federal judge Sandra Arroyo Salgado, ex-wife of late Argentine prosecutor Alberto Nisman, speaks during a news conference in Buenos Aires March 5, 2015. Independent forensic tests show the Argentine state prosecutor found dead days after he accused President Cristina Fernandez de Kirchner of plotting to cover up Iran's alleged role in a 1994 bombing was murdered, the deceased prosecutor's ex-wife said on Thursday. Argentine authorities have not released full results of the autopsy of Nisman, who was found in a pool of blood with a bullet to the head on Jan. 18. The few forensic details that have been made public so far by prosecutor's office have suggested suicide, though no official ruling has been made. REUTERS/Enrique Marcarian (ARGENTINA - Tags: CRIME LAW POLITICS)