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A man carries a child following a Via Rail train and city bus collision in Ottawa's west end Wednesday, Sept. 18, 2013. Multiple people were killed when a passenger train collided with a city bus at a crossing at the peak of morning rush hour, police said Wednesday. Rescue crews swarmed over the wreckage. The injured from the bus who would walk were taken to a second bus nearby to be treated by paramedics. The train tracks in the area cross both a major city street and a transit line reserved for buses only. (AP Photo/The Canadian Press, Adrian Wyld)

Train collides with bus in Ottawa

A double-decker bus collided with a passenger train in Canada's capital Wednesday, ripping off the front of the bus and killing six people, police said. Witnesses said the bus went through a closed crossing barrier, and passengers said they screamed "Stop, stop!" at the driver just before impact.

Officials said 30 people were injured, 11 critically. The crash in Ottawa occurred at the peak of morning rush hour. The cause was not yet clear, said John Manconi with bus operator OC Transpo.