PA students injured in Boston bus crash

(Boston, MA) -- Massachusetts State Police say dozens of Bucks County high school students and their adult chaperones have been injured in a bus crash in Boston.

Authorities say the group was on a charter bus after a visit to Harvard University when the Calvary Coach bus crashed struck an overpass on Soldier's Field Road in Boston last evening. Police say the driver failed to heed low-clearance warning signs.

Some passengers were trapped for more than an hour as rescue crews worked to free them.

Emergency officials say 34 people were injured, including one person with life-threatening injuries.

The students were part of the Bristol-based Destined for a Dream Foundation, a nonprofit that's designed to help underprivileged youth. The bus was headed back to Bucks County at the time of the accident. 

Officials with the nonprofit refused to comment on the crash when contacted by the Associated Press.