Off-duty police officer seriously injured in Highway 400 crash: OPP CTV NewsHighway 400 lanes closed north of Toronto after multi-vehicle crash CBCUPDATE: Off-duty officer suffers ‘serious’ injuries in Hwy. 400 crash OrilliaMatters.comOff-duty police officer seriously injured in Highway 400 crash, northbound lanes closed: OPP CP24Collision involving cop closes stretch of northbound Highway 400 Toronto Sun
