Burmese troops fired on thousands of demonstrators calling for the overthrow of President Sein Lwin, and a Western diplomat said Tuesday he had reports of more than 100 people killed. State-run radio, monitored in Bangkok, Thailand, said at least 36 people died. A U.S. official in Washington said witnesses reported seeing demonstrators carrying bodies of dead protesters over their heads as they marched through the streets of Rangoon, the Burmese capital. A Rangoon-based Western diplomat said he had "fairly credible" reports of more than 100 people killed. State-owned Rangoon radio said authorities clamped an 8 p.m.-to-4 a.m. curfew on the capital and banned gatherings of more than five people.