In the town of Tremseh, just northwest of Damascus, up to 200 people were killed as violence continues to splinter Syria. Now the United Nations want to find out why and how. A team arrived on Saturday to investigate the killings in the town, where Secretary of State Hillary Clinton has already suggested Bashar al-Assad's force "deliberately murdered civilians." The government said it killed no civilians. But the United Nations is convinced that Syrian government forces contravened the Annan six-point peace plan, and deployed tanks, artillery, and helicopters to massacre civilians. "We have sent a large integrated patrol today to seek verification of the facts," a U.N. representative said.