BUENOS AIRES — A federal prosecutor is trying to revive a criminal complaint filed by Alberto Nisman, a prosecutor who died in mysterious circumstances earlier this year.

Mr. Nisman had accused Cristina Fernández de Kirchner, then the president, of trying to shield former Iranian officials he suspected of planning a 1994 bombing of a Jewish center here in exchange for trade benefits.

Mr. Nisman’s complaint, which Mrs. Kirchner believed was part of a plot to destabilize her administration, dissolved in Argentina’s courts when a three-judge panel ruled unanimously in May to accept another prosecutor’s decision to drop it. That prosecutor, Javier de Luca, concluded that there was no crime on which to base an investigation.

But shortly after Argentina’s new government moved on Monday to abandon a public pact with Iran that Mr. Nisman had claimed was intended to serve as cover for the secret deal described in his complaint, the prosecutor, Raúl Pleé, sought to revive the case, according to Télam, the state news agency.