AFP - Riot police deployed in force in key parts of Tehran Monday and prevented opposition supporters from staging protests after Mahmoud Ahmadinejad was endorsed as president for another term, witnesses said.
  
The official IRNA news agency said riot police had deployed in all main squares and streets of the capital after Iran's supreme leader Ayatollah Ali Khamenei officially endorsed Ahmadinejad for a new four-year term.

  
Witnesses said hundreds of opposition supporters tried Monday afternoon to stage a demonstration at Vali Asr Square but they were prevented from gathering by riot police.
  

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"The police presence was strong but there were no clashes," one witness said. "The people were not very aggressive and left when police told them to."
  
The Fars news agency reported that opposition leader Mehdi Karroubi joined a gathering of around 100 supporters at a key intersection in central Tehran but riot police prevented them from demonstrating.
  
Ahmadinejad's landslide victory in the June presidential vote was met with a vast outpouring of public anger and opposition complaints the vote was rigged.
  
At least 30 people were killed and several thousand protesters rounded up, including reform figures and journalists.