Iran's Revolution Guard Corps (IRGC) warned against the destabilizers of public security and law, the official IRNA news agency reported on Monday.

A statement released by the IRGC said in the current situation and following the recent clashes, the strategy of IRGC and security forces is to firmly confront the destabilizers of public security and law and the threats against the revolution.

The IRGC statement ordered demonstrators to "end the sabotage and rioting activities," warning Western countries not to support the rioters.

Iran's police have arrested 457 people in the post-election violence that erupted Saturday in Tehran despite warnings against illegal gatherings, local Press TV reported on Monday.

"The arrested vandals destroyed public properties, broke windows of banks and shops and caused trouble for the people," the police said in a statement, adding that armed terrorists also set fire to a mosque and two gas stations and a military post have been attacked.

The police have successfully managed to restore security to the main streets of Tehran and calm has returned to the Iranian capital, the statement added.

Thirteen people were killed in clashes between Iranian police and "terrorist groups" on Saturday.

Turbulence has overshadowed Tehran following the disputed presidential election on June 12. On Saturday, Iran's police used tear gas and water cannons to disperse demonstrators at a main square of Tehran in the latest violent clash between protestors and security forces.

On June 13, Iran's Interior Minister Sadeq Mahsouli said incumbent President Mahmoud Ahmadinejad won 62.63 percent of the total ballots on June 12, while his main rival Mir-Hossein Mousavi got 33.75 percent.

After the official declaration, Mousavi protested "strongly" the "obvious violations" in Iran's presidential election. He also appealed to the Guardian Council for the cancellation of the election results.

Mousavi's supporters have participated in massive rallies in Tehran and other cities over the past days.

(Xinhua News Agency June 22, 2009)