A passenger train has collided with a double-decker bus in Canada's capital Ottawa, killing at least six people.
Authorities say more than 30 others were injured, eleven of them seriously.
Witnesses say the bus drove through a rail crossing before colliding with the train during the morning rush-hour.
The impact of the crash completely sheared off the front of the local bus, which was packed with commuters.
Passengers on the bus told reporters they shouted at the driver to stop as he approached the railway crossing.
Witnesses say the bus crashed directly into the side of the four-carriage passenger train as it was passing, even though the barrier was down and warning lights were flashing, the BBC reports.
One passenger speculated that the bus's brakes may have failed.