Alberto Nisman was a prosecutor working on the AMIA bombing case. It was a terrorist attack against a Jewish community center that took place in 1994, and which is still unsolved. Nisman prepared a criminal complaint against president Cristina Fernández de Kirchner, accusing her of covering up the involvement of Iranian suspects. He was found dead at his house on January 18, one day before he would report his progress to the Congress. As of February 18, the date of the demonstration, the investigation of his death had not settled if it was a suicide or a murder.