UPDATE: Metro officials have placed the bus driver involved in Wednesday's crash on paid leave to be tested for drugs and alcohol use, said Metro spokesman Reggie Woodruff. Such testing is standard after any crash. He said the bus was running on the A46 route.

12:19 p.m.: Eleven people were taken to local hospitals after a Metrobus and sport utility vehicle collided in a Southeast D.C. intersection.

The crash in Congress Heights was big enough that D.C. officials declared it a mass casualty, though D.C. Fire & EMS spokesman Pete Piringer said the label came from the number of people injured, not the severity of the crash. He added that none of the people appeared to have serious injuries.

The crash occurred just after 11 a.m. at the intersection of Savannah and Fifth streets in Southeast, Piringer said. Emergency crews checked out 13 people involved, and took 11 to local hospitals, including the bus driver, he said.

It was not immediately clear who was at fault. Metro officials and local police are investigating.