At least one person is dead in Tehran after the pro-government Basiji militia opened fire on the crowd.

TEHRAN, Iran – Gunfire from a pro-government militia killed one man and wounded several others Monday after hundreds of thousands of chanting opponents of President Mahmoud Ahmadinejad marched in central Tehran to support their pro-reform leader in his first public appearance since disputed elections. …

A group of demonstrators with fuel canisters set a small fire at a compound of a volunteer militia linked to Iran’s powerful Revolutionary Guard as the crowd dispersed from the square. As some tried to storm the building, people on the roof could be seen firing directly at the demonstrators at the northern edge of the square, away from the heart of the rally.

An Associated Press photographer saw one person fatally shot and at least two others who appeared to be seriously wounded. …

The crowd — many wearing the trademark green color of Mousavi’s campaign — was more than five miles (nine kilometers) long, and based on previous demonstrations in the square and surrounding streets, its size was estimated to be in the hundreds of thousands.