The bus collided with the platform at the Westboro bus station at about 3:50 p.m. ET, he said. Twenty-three people were hurt and taken to hospitals, he said. It plowed along a station platform and into the overhanging roof of the transit shelter, which carved deep into the vehicle's upper level and crushed a number of seats.
She told Global News that what chilled her the most is that she'd been sitting in an identical double-decker bus as she passed, in the same upper-right section that saw the most damage from the impact.
While the cause of the crash is still unknown, Mailloux said he has often noted the express buses travelling through the area at high speeds.
He went outside and came across a "chaotic" scene, with at least 30 emergency vehicles, including seven or eight fire trucks, and lots of police and bystanders, he said.
Myles Cassidy, the chief of the Ottawa paramedic service, said that a total of 25 patients had been transported to the hospital from the scene. In the case of the death victims were according to his information, two passengers and a man who had been standing at the bus stop Westboro to the West of the city centre. "And there was a bit of blood on the floor", he said.
While the National Transportation Safety Board does remain on the scene of the crash, Bordeleau said they are not involved in the investigation but collecting data for a study being conducted on similar crashes.More news: New AI software tracks down users who share Netflix accounts and passwords
"Based on the way it looked, if there was anybody at the front of the bus at the top â¦ I can't see how they would've been able to get away from that", he said.
"I got off a double-decker bus probably about an hour before this at the Westboro Station", he said. "I think everyone on my bus felt the same, and then the whole way home no one was speaking".
"My first thoughts are with those who have been injured and their families".
Politicians, including Prime Minister Justin Trudeau and Ontario Premier Doug Ford, tweeted messages of support.
- With files from David Reevely in Ottawa and Laura Kane in Vancouver.