BETHESDA, Md., Sept. 29 (UPI) -- A tour bus heading home to Pennsylvania after a trip to the nation's capital crashed down an embankment in Maryland Wednesday, killing the driver, police said.
The dozen children and adult passengers on the bus were taken to hospitals, The Washington Post reported. Another person was injured in a secondary accident involving two cars.
All the injured are expected to survive, Maryland State Police spokesman Greg Shipley said.
The driver was identified by authorities as Joseph A. Clabaugh Jr., 66, of Hanover, Pa., the Post said.
Authorities said the bus went through a metal guardrail on an Interstate 270 spur about 4 p.m. EDT, went down a 45-foot embankment and rolled once before landing upright.
Witnesses said the bus passengers were on their way to Carlisle, Pa., after spending the day at the National Zoo and Smithsonian museums, the Post reported.
An investigation was started into the cause of the crash.
The bus belonged to Wolf's Bus Lines in York Springs, Pa.