VANCOUVER -- A person is in grave condition after getting trapped between two buses in downtown Vancouver Monday.

Vancouver police posted to social media just before 9 a.m. saying there was a road closure at Cambie Street and West Cordova as officers investigated "a serious collision."

"Drivers are asked to avoid the area," the message said.

Images from the scene showed an articulated TransLink bus with its front end severely smashed. The windshield is shattered, and the bike rack is twisted.

BC Emergency Health Services told CTV News in an email that it was called at about 8:20 a.m. for a report that a person was trapped between two buses.

"Multiple paramedic units responded," the statement said. "One patient has been transported to hospital in grave condition." 

In an emailed statement, TransLink said the incident involved two Coast Mountain Bus Company vehicles and that it was an employee who was "critically injured." No passengers or pedestrians were hurt, TransLink said.

"CMBC will be launching a full investigation, working with the relevant authorities, including the Vancouver Police Department and WorkSafeBC, to determine the circumstances that led to this incident," the statement from the transit authority said.

"This is very difficult news for all of us across the TransLink enterprise. Our hearts go out to all of those involved and their families."