WASHINGTON (Reuters) - At least four people were killed and scores more were injured when two Washington, D.C., subway cars collided during afternoon rush hour on Monday on the outskirts of the city, Washington Mayor Adrian Fenty said.
"What we do know is that there are scores of people who have been injured. There are already four confirmed fatalities," Fenty told a news conference at the scene. "It is my present understanding that this would then be the deadliest accident in the history of our Metro train transit system."
