Source:
nyt/apWitnesses say protesters are rallying in Tehran despite a government threat of harsh action if they take to the streets again to demand a new election.
The witnesses tell The Associated Press that supporters of opposition leader Mir Hossein Mousavi are holding what they describe as small rallies in open defiance of the country's supreme leader.
Web sites run by supporters of opposition leader Mir Hossein Mousavi called for street protests at 4 p.m. (7:30 a.m. EDT, 1130 GMT) but the candidate himself issued no public statement.
Fire trucks took up positions in Revolution Square, the site of the planned gathering, and riot police surrounded Tehran University, the site of recent clashes between protesters and security forces, one witness said.
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http://www.nytimes.com/aponline/2009/06/20/world/AP-ML-Iran-Election.html