More than 50 people were hospitalized after 69 cars were involved in a chain-reaction crash on a Virginia interstate on Sunday morning, state authorities say.
Images from Interstate 64 in York County near Williamsburg showed cars and trucks in a tangled heap following the pileup.
Virginia State Police said the crashes began on an icy and fog-shrouded overpass bridge around 7:51 a.m.
"Fog and ice were causative factors, but the cause of the actual accident, we do not know at this time," said Virginia State Police spokeswoman Sgt. Michelle Anaya.