ARGENTINA-ISRAEL-IRAN-AMIA-ATTACK-NISMAN-LAGOMARSINO

Argentine Diego Lagomarsino speaks during a press conference held at lawyer Maximiliano Rusconi's office, in Buenos Aires, on January 28, 2015. Lagomarsino, a computer expert and colleague who said he brought prosecutor Alberto Nisman a handgun Saturday night at his request, has been barred from leaving Argentina. Nisman was found in his Buenos Aires home with a bullet to the head on January 18, before he was to appear at a congressional hearing to accuse President Cristina Kirchner of shielding Iranian officials implicated in a bomb attack on a Jewish charities federation office in 1994 that left 85 dead. AFP PHOTO / ALEJANDRO PAGNI (Photo credit should read ALEJANDRO PAGNI/AFP via Getty Images)