The Special Investigations Unit says it’s investigating a collision between an Ontario Provincial Police vehicle and a milk truck that left two officers injured. The police watchdog agency says the officers were in a marked police vehicle on an eastern Ontario county road near Highway 401 in Loyalist Township on Wednesday, when the cruiser collided with the milk truck.

Both officers were taken to a Kingston-area hospital.

The driver of the cruiser remains in hospital, while the passenger was treated for facial injuries and released.

Police say the driver of the milk truck wasn’t injured in the crash.

The SIU is an arm’s length agency that investigates reports involving police where there has been death, serious injury or allegations of sexual assault.