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A special prosecutor who had accused Argentine President Cristina Fernandez and other government officials of shielding Iranian suspects in the country's worst terrorist attack was found dead of a gunshot wound.

Alberto Nisman was set to testify in a hearing about the 1994 bombing of an Argentinian-Israeli center in Buenos Aires that killed 85 people and injured more than 200. News of his death sent ripples through the country's Jewish community, one of the largest outside of Israel.

Late Sunday, federal police agents in charge of Nisman's protection alerted superiors that Nisman wasn't answering phone calls. His body was found in a room locked from the inside with a gun next to it. Some said it pointed to a self-inflicted gunshot wound while others refused to believe that was the case. Authorities have not elaborated on the investigation.

Nisman was appointed 10 years ago to revive the investigation into the bombing. Last week he accused Fernandez and other senior officials of agreeing not to punish at least two former Iranian officials in the case and asked a judge to call them for questioning.

"Nisman died but his denouncement does not," said Sergio Bergman, a prominent rabbi in Buenos Aires, on Twitter. "Our sorrow and condemnation will result in more memory, truth and justice!"

--The Associated Press