The government of Iranian President Mahmoud Ahmadinejad says 'the enemies of the nation' are fomenting post-election riots across the country.

"Our enemies and their media have hired some opportunist and mischievous elements and have misused the simple-mindedness of some people to cause unrest," the government said in a Thursday statement.

It further accused the Western foreign media of 'spreading lies and rumors' to create doubts over the health of Friday's presidential election.

Iran's European Union envoy criticized the Western countries for their "support for these trouble-makers and anarchists under the cover of supporting democracy and the voice of the Iranian people".

In a Thursday statement, the Iranian embassy in Brussels said, "All foreign involvement will have a damaging impact and is rejected by the people and the government of the Islamic Republic of Iran".

Incumbent Ahmadinejad was re-elected as the Iranian president on June 12 with almost two-thirds of votes, but his main rival Mir-Hossein Moussavi has rejected the result as fraudulent and demanded a re-run of the election.

In the statement, the Ahmadinejad administration called on the security forces to take measures to uproot vandalism and the frightening of the public.

Hundreds of thousands of Moussavi supporters have staged daily rallies since the announcement of election results on Saturday, asking the Guardian Council to nullify the election.

Despite Moussavi's insistence on the peaceful nature of protests, violence flared in early stages of demonstrations. At least eight people were killed in Tehran and many others sustained injuries.

Iran has revoked all foreign media accreditations and foreign reporters are not allowed to cover gatherings which are banned as illegal.

Moussavi's camp has stressed that the post-election rioters are "not supporters of, or linked to" the former prime minister, who suffered a crushing defeat in the June 12 poll.

The Moussavi camp says that a number of "miscreants" are attempting to de-fame the popular figure and his supporters "by conducting acts of vandalism" in his name.

The Leader of the Islamic Revolution, Ayatollah Seyyed Ali Khamenei, has also shed light on the situation. The Leader said on Tuesday that those who vandalize public property and stage violent riots are not related to any of the presidential candidates or their supporters.

On Thursday, dozens of Ahmadinejad's supporters staged a rally in front of the Justice Department in the capital, Tehran. They also called for strong action against the rioters.