prosecutor alberto nisman died over a year ago. he was found with a bullet wound in the head.authorities believe that it could have been murder. >> translator: if he killed himself he would have had gun powder on his hand. he didn't. we did several tests with the gun that was used and there was gun powder. nisman had none of his hand. >> reporter: accusations said that the president received bribes in exchange for the cover of a bombing of a jewish center. members of the judiciary seem to be more willing to pursue an investigation. in the last year conspiracy theories have flourished in this country. some are convinced he was murdered because he was a threat for the argentine and iranian governments. this is a former spy master with close links with the cia and israeli intelligence. the only image of him is this picture. he has recently said in court that those behind the killings were close to president curber in and suggested that iran may have been behind his death. but this man says he should be investigated as well. >> translator: this man was fired by the administration,

teresa vo has the story. >> prosecutor alberto nisman died over a year ago. he was found with a bullet wound in the head. while officials initially treated the case as suicide, some believe it could have been murder. >> if nisman had killed himself he would have had gunpowder on his hand, he didn't. we did several tests with the gun that was used and there was gunpowder, nisman had none on his hands. >> the day before he was supposed to go to congress to make statements, he was found dead. trading concession is in return for hiding cristina kirchner's role i in the bombing of a jewih center. a in the last year expimps expiz theorieconspiracy theories have abounded. he was a threat for the argentine and iranian government. >> former spy master with close links with the cia and israel intelligence. the only image of him is this picture. he has recently said in court that those behind the killing were close to former president kirchner. he even cugd that iran could be behind his death. but claudio lipsig says that steusso should be investigated as well. >> transl

lie ahead >>> it has been more than a year since the death of argentina's federal prosecutor alberto nisman he died a day before he was due to give evidence in congress about a cover up of cristina kirchner. >> reporter: it was a death that shocked the nation and forced thousands of people on the streets. prosecutor nisman died over a year ago. he was found with a bullet hole in the head. while initially officials treat it suicide, authorities believe it could have been murder. >> translation: if he had killed himself, he would have had gun powder on his hand. he didn't. we did several tests with the gun that was used and there was gun powder. he had none on his hand >> reporter: he was found dead a day before he was supposed to go to congress to queues christiri kirchn kirchner. -- to accuse. the case against kirchner was later thrown out. since his death there has been a changing government in argentina. members of the judiciary seem to be more willing to pursue an investigation into what happened to the prosecutor. in the last year conspiracy theories have flourished in this country and