Three people are dead and seven others were injured after a City of Calgary transit bus caught fire in the city’s northeast early Thursday afternoon.

Calgary Police Service officers were called to the scene in the 800 block of Saddletowne Circle N.E. at approximately 1:11 p.m. following reports of a vehicle fire involving the municipal bus.

Emergency responders confirmed at least 10 people were injured during the incident. Three individuals were declared deceased at the scene, while one person suffered life-altering injuries and another sustained serious injuries.

A Calgary police officer also sustained minor injuries and was transported to a local hospital for treatment.

Police say the cause of the fire remains under investigation, and no further details regarding the identity of the victims or potential causes have been released.

This story will be updated as more information becomes available.