A judge on February 26 dismissed the charges against Argentina's President, Cristina Fernandez, and Foreign Minister Hector Timerman over the alleged cover-up in a 1994 terrorist attack.
The two had been charged with trying to cover up Iran's involvement in the attack on a Jewish community centre in Buenos Aires that claimed the lives of 85 people.
Federal Judge Daniel Rafecas said the charges filed by prosecutor Gerardo Pollicita on February 13 weren't adequately founded and dismissed them "for lack of a crime."
Pollicita had charged Fernandez in connection with the complaint that special prosecutor Alberto Nisman filed on January 14.
Nisman, who had been investigating the attack on the community center for 11 years, was found dead in his apartment just four days later under mysterious circumstances.
Fernandez has dismissed Nisman's allegations, saying the were an attempt to destabilize the government.
Nisman and Pollicita alleged that Fernandez had plotted to pardon the Iranian suspects in the attack in order to improve commercial relations with Tehran.
Based on reporting by dpa and AP