"Mahmoud Ahmadinejad has been re-elected as president of Iran in a resounding victory," the BBC reports. "With more than 80% of results in, official figures said he won 62.6% of the vote, amid a record high turnout."
"But reformist Mir Hossein Mousavi has also claimed victory, calling the result a 'dangerous charade', as backers vowed to appeal for a re-run."
"Police have sealed off Mr Mousavi's campaign HQ, preventing his supporters from holding a news conference."
However, the Washington Post notes officials "delayed without explanation an expected announcement of the complete results, which news agencies said suggested intervention by Iran's Islamic authorities to tamp down a potentially volatile situation."