Emergency crews respond to the scene where a city bus collided with a Via Rail passenger train at a crossing in Ottawa on Wednesday, September 18. 
A rescue worker inspects the scene of the crash on September 18. 
Train passengers are escorted away from the crash site on September 18. 
A man carries a child past the scene of the crash on September 18. 
Members of the media watch as emergency crews respond to the crash on September 18. 
People comfort one another after the crash on September 18. 
The Via Rail passenger train sits on the tracks on September 18. 
An injured passenger is taken to an ambulance on September 18. 
Emergency crews respond to the scene of the crash on September 18. 
Officials respond to the scene in Ottawa on September 18. 
The Via Rail passenger train sits on the tracks on September 17. - "Bodies and debris" are everywhere, one official said
- The train slammed into a city bus in Canada's capital
- The front end of the bus was badly damaged, firefighters said
Ottawa, Ontario (CNN) -- [Breaking news alert, 11:53 a.m. ET]
A double-decker bus and a passenger train collided in Ottawa Wednesday morning, killing six people, including the bus driver, authorities said. At least 30 other people were injured, and a third of them were in critical condition. All the fatalities and serious injuries occurred on the bus.
[Previously published story]
A double-decker bus and a passenger train collided in Ottawa Wednesday morning, killing five people, police said.
Fire officials in Ottawa also said at least a dozen people were injured, CTV's News Channel reported.
"We had bodies and debris pretty much everywhere at the impact site," Ottawa Fire Service's Marc Messier told CTV.
"It's definitely a serious scene," he said. "Our top priority is getting anyone with serious injuries to the hospital and getting them into proper care."
Train collides with double-decker bus The crash happened at 8:48 a.m., the networks reported. CTV said a Via Rail train at Woodroffe Avenue and Fallowfield Road hit an Ottawa Carlton Transit city bus.
The train derailed "approximately 100 to 200 feet down the rail," Messier said, and all of the casualties were on the bus.
CBC News quoted firefighters as saying the front end of the bus suffered significant damage. It said in a Twitter message that the Transportation Safety Board was headed to the crash site.
Heather Hogan, 26, of Kingston, Ontario, was waiting for the train when she heard "a thud" and "a loud metal on metal screech."
"I called 911 and said there was a train derailment," she said. "Everyone was just standing there in shock."
"My thoughts are with the victims of this accident," Ottawa Mayor Jim Watson said. "Please pray for those affected and for our 1st responders dealing with this tragedy."
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CNN's Paula Newton and Joe Sterling contributed to this report
