Iran's Islamic Revolutionary court has issued verdicts for nine more individuals involved in the Ashura riots in Tehran last December, Press TV reported.
The court sentenced one rioter to death and issued punitive jail sentences for the other eight, the Iranian Student News Agency reported.
The ruling followed two open court sessions in the presence of the detainees' attorneys and a representative of the public prosecutor over the past week.
The detainees were charged with acting as a "mohareb" (enemy of God), threatening the national security and actively propagating against the Islamic establishment.
Meanwhile, an appeals court has upheld the sentences issued against 35 other Ashura rioters. The verdicts include punitive jail terms in addition to fines.
The charges against the rioters include acting against the national security, assaulting law-enforcement officers and destroying public property.
The anti-government riots on December 27 were staged on the holy day of Ashura, in commemoration of the martyrdom of Imam Hossein (PBUH), the third apostle of the Shia followers of Islam.
The rioters damaged public property, set fire to trashcans, and clashed with security forces who attempted to restore order, as millions of worshipers were participating in the traditional mourning rituals.
Iran has blamed Western countries of provoking, masterminding and supporting the riots that erupted after the June 12, 2009 presidential election in the country.