TEHRAN, Iran (CNN) -- Iran's government Tuesday banned foreign media from covering rallies in Tehran being held in the wake of last week's disputed presidential election.
Supporters of Iranian opposition leader Mir Hossein Moussavi protest Monday in Tehran.

Supporters of Iranian opposition leader Mir Hossein Moussavi protest Monday in Tehran.
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The decision comes after video footage emerged showing violence at demonstrations in support of opposition leader Mir Hossein Moussavi.

Moussavi has contested the results of Friday's election, which showed an overwhelming victory for hard-line President Mahmoud Ahmadinejad.

Moussavi's supporters have taken to the streets, often clashing with police and Ahmadinejad's backers.

Iran's government had criticized some of the media coverage and images, describing them as biased.

International news outlets, including CNN, can talk about rallies in their live reports, but they are not allowed to leave their hotel rooms and offices.

Iranian government-run television, which was not affected by the restrictions, aired live coverage of Tuesday's rally in support of Ahmadinejad, whose supporters crowded the streets of central Tehran. cnn