06/05/2018 08:54 EDT | Updated 06/05/2018 09:27 EDT

Highway 401 Bus Crash: Chinese Tourist Dies In Hospital

Police say they are still investigating the collision.

The damage to the side of a tour bus that was involved in a crash on Highway 401 West, near Prescott, Ont., is seen as tow operators work to remove it from a ditch on June 4, 2018.

PRESCOTT, Ont. — Provincial police say a 54-year-old Chinese man has died after being injured in a tour bus crash in eastern Ontario on Monday.

Officers say a bus carrying 37 people — including the driver, a tour guide and a group of Chinese tourists — drove off Highway 401 between Brockville and Prescott, and hit a rock formation by the side of the road.

Police say four bus passengers remain in hospital in serious, life-threatening condition.

A truck driver who passed the scene of the crash said he could see passengers standing outside the bus who appeared to have facial injuries.

A manager at the Massachusetts-based Union Tour Express company said Monday he was aware one of their buses was involved in the collision but could not provide any further information about the incident.

Police say they are still investigating the collision.

"It's going to take some time to investigate,'' Const. Suzanne Runciman said. "There's lots of witnesses to talk to and...there's mechanical things they need to took into so it's going to take some time before we can tell you the cause."

Ontario Provincial Police will not release the name of the deceased passenger until his family has been notified, though the man's loved ones can also request not to have his identity made public, Runciman said.

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