WASHINGTON, Jan. 5 (Xinhua) -- A massive crash on a highway in the U.S. state of Pennsylvania on Sunday morning left five people dead and dozens of others hospitalized, said authorities.
The crash happened at approximately 3:33 a.m. local time (0833 GMT) on the Pennsylvania Turnpike in Mount Pleasant Township, Westmoreland County, Pennsylvania State Police said in a press release.
"A tour bus was traveling on a downhill curve and struck an embankment. Commercial vehicles traveling behind, then struck the tour bus," the release said.
It said the involved vehicles include the tour bus, three tractor trailers loaded with parcels and one private passenger vehicle. Five people were killed and a total of 57 others were taken to several hospitals.
The identities of the victims have not been released.
The Red Cross is assisting the patients and their families at the hospitals.
The National Transportation Safety Board is assisting investigation into the crash.
The Pennsylvania Turnpike, a toll highway, runs for 579 km across Pennsylvania.
