Argentine prosecutor who alleged cover-up by president dead

(ANSA) - Buenos Aires, January 19 - A federal prosecutor in Argentina who had been investigating President Cristina Fernandez de Kirchner was found dead with a weapon close to his body, but authorities said they are not sure it was suicide.
    Alberto Nisman, 51, had been threatened, said an opposition MP Patricia Bullrich, who said she spoke twice on the phone last Saturday with Nisman.
    "We cannot exclude any hypothesis," investigators said after Nisman's body was found Sunday.
    Nisman had alleged a cover-up involving Kirchner as he investigated the 1994 bombing of a Jewish centre in Buenos Aires in which 85 people died.
    His mother found his body in the bathroom of his home, after body guards could not reach him by phone on Sunday, BBC reported on its website.
    Nisman had been scheduled to present his allegations against Kirchner and others on Monday to a congressional committee.