A child is in critical condition after a multi-vehicle crash on the Perimeter Highway Saturday afternoon.

RCMP said nine people were injured, including a 9-year-old girl, who is in critical condition, and a 71-year-old woman, who is reported to be in unstable condition.

Four vehicles were involved in the collision that happened around 12:30 p.m. on the Perimeter at Pipeline Road, police said.

Two vehicles were in the ditch and a traffic light appeared to be knocked over.

Eastbound traffic on the Perimeter was rerouted following the collision.

Police said the investigation into the cause of the crash is ongoing