4 Marines die in Afghanistan; 870 inmates escape

"KANDAHAR, Afghanistan - About 870 prisoners escaped during a Taliban bomb and rocket attack on the main prison in southern Afghanistan that knocked down the front gate and demolished a prison floor, Afghan officials said Saturday. And in western Afghanistan on Saturday, a roadside bomb exploded near a U.S. military vehicle, killing four Americans in the deadliest attack against U.S. troops in the country this year, officials said."