According to an OPP news release, a constable spotted a GMC Astro van trying to evade a RIDE check at about 1:15 a.m.
The officer tried to get the vehicle to pull over, but the van kept moving.
During a subesquent pursuit, the van "made contact" with the police vehicle on Wealthy Place, near Dixie Road and the QEW.
The van eventually headed to the QEW and fled.
A female passenger left the van during the pursuit. She has spoken to police.
The van has been recovered. Police are still looking for the driver and are urging him to turn himself in.