Russian school siege timeline

from BBC News a timeline of the Russian school siege and hostage situation in the town of Beslan, where armed militants were holding as many as 400 children under demands that Russian troops withdraw from war-torn Chechnya. As of this morning, reports coming out of Beslan indicate that as many as 150 people, mostly school children, may have died from a series of heavy gunfire and several explosions that caused the school's roof to collapse. *update: BBC/Q&A: The Chechen conflict BBC/Pictures of the school battle