Iran arrested two German diplomats who were involved in the Ashura Day riots in Tehran in December, the state IRIB TV said Wednesday. The two German diplomats were arrested while they were participating in the riots of Ashura Day, the report quoted an unidentified deputy of Iran's minister of intelligence as saying. 'Two German diplomats using fictitious names of Yogi and Ingo .. . had green symbols (the emblem of Iran's green movement opposition) with them when they were arrested,' the official said. 'According to the investigations to the arrested (Iranians) who were linked to the two German diplomats, it was the diplomats who gave the green wrist-rings and green T-shirts to the rioters,' the official said. The report did not say whether the German diplomats are still in detention or were released. The state-run IRNA news agency quoted the unidentified official as saying that 'Riots of the day were preplanned and some networks related to the anti- revolutionary agents as well as to Western intelligent services were involved in the riots.' Sporadic clashes erupted in Tehran on Dec. 27, 2009 in coincidence with the Ashura Day, a ceremonial day celebrated by Shiites worldwide. Eight protestors were killed in the incident, according to a statement by Iran's Supreme National Security Council. Iran's religious officials consider the unrest that day as the desecration of religious values. 