A serious accident has closed a portion of Woolverton Rd. in Grimsby.
It appears a vehicle hit a tree at the intersection Kemp Rd. and Woolverton.
Police say it's not known at the point when the road will reopen.
Emergency crews had to extricate the passengers.
Unconfirmed reports say two passengers have no vital signs
Woolverton is between Kemp and Mud St.