Police and investigators with the MTC are still trying to figure out the precise circumstances of Tuesday night's accident in Dorval in which the driver of an MTC bus and a passenger in a car were killed.

While police have yet to pronounce themselves on a probable cause of the accident, witnesses from the MTC bus that was involved have suggested that the bus was travelling over the speed limit at the time of impact.

"It's not my impression, it's a certainty," says Jean-Robert Turgeon, who was on the bus. "It was going at 60 or 65 kilometres an hour.

"I've seen that bus driver three of four times, speeding. And that time, he was speeding again."

In addition, police won't confirm reports of one of the accident vehicles had gone through a red light.

The force of the initial impact between the bus and a BMW sent the bus on its side and left the driver of the bus and the 61-year old female passenger of the car dead at the scene.

MTC driver's union official Tom Mouteros says the bus driver was a 52-year old man, a 23-year veteran and that among those mourning his death are his wife and sister who are also bus drivers with the MTC.

Seven people were injured, among them, the driver of the car and a passenger of the bus who were more seriously hurt. Police say those two remain in critical but stable condition in hospital.

MTC spokeswoman Marianne Rouette says the company has offered its condolences to the victims' families.

"It's a day of mourning for the entire MTC family," Rouette said.

Photos: montrealgazette.com, Margoe Edwards (CJAD) STM website (via Alex C.)