An image of the late prosecutor Alberto Nisman is taped to a grate next to a hand written sign that reads in Spanish; "National sadness," outside the funeral home where a private wake was held before the start of the funeral procession, in Buenos Aires, Argentina, Thursday, Jan. 29, 2015. The prosecutor was scheduled to appear before Congress the day after he was found dead in his apartment on Jan. 18, to detail his allegations that President Cristina Fernandez had conspired to protect some of the Iranian suspects in the 1994 bombing of a Jewish center. The man who gave Nisman the gun that killed him said Wednesday that Nisman feared for the safety of his daughters and didn't trust the policemen protecting him. (AP Photo/Rodrigo Abd) (The Associated Press)
BUENOS AIRES, Argentina – Investigators say testing of the gun used to kill a prosecutor who had leveled incendiary charges against Argentina's president has found traces of DNA only belonging to him.