Three people were killed and 23 others were injured just before rush hour on Friday after a double-decker bus crashed at a busy transit station in Ottawa.
"Our report indicates that twenty-three people were injured in the collision, some very seriously, and transported to the hospital".
The driver of the bus has been detained and the crash is now under investigation.
"I heard a bump and I saw the bus crashing into Westboro Station", the local student told CTV Ottawa, still visibly shaken from what he had seen.
Bordeleau made it clear while police expect to release the scene Saturday, work collecting evidence, analyzing photos, videos and data, along with interviewing the almost 90 people on the bus is going to be a "slow, painstaking process".
"There's no question that the weather adds complexity at the scene", said Bordeleau said. The bus driver was arrested.
Officers believe the bus was at or near capacity, meaning about 90 people were on board, and they're hoping to interview everyone involved. The bus was westbound for Kanata, a more distant Ottawa suburb, Watson said.More news: Queen tweets heartwarming Golden Globes post with Rami Malek
The cause of the disaster, the police initially made no concrete information.
Injured passengers were being treated by paramedics on the ground surrounding the bus. Despite mid-afternoon temperatures of about minus-15, it hadn't snowed in Ottawa Friday and the busway is the top priority for the city's snowplows, salters and sanders.
Ottawa Hospital's trauma center said it had received nine patients "in critical condition" from the crash.
This the second major crash in recent years involving an Ottawa transit bus.
Prime Minister Justin Trudeau, who was in Saskatchewan, tweeted his "deepest condolences to the families of victims".
In 2013, an Ottawa bus collided with a Via Rail train in suburban Barrhaven, killing six people.