Police are currently searching for at least one suspect after an Ontario Provincial Police cruiser was stolen following a head-on crash.

According to OPP Sgt. Kerry Schmidt, the events began around 7:30 p.m. on Highway 407 when police spotted a vehicle driving erratically.

A pursuit began after the vehicle failed to stop for police, he said.

The vehicle subsequently collided head on with a second vehicle after driving the wrong way onto the southbound Highway 410 ramp to the eastbound Highway 407.

Following the crash, at least one suspect who fled the scene was then somehow able to steal a police cruiser.

“Obviously, if we get a head-on crash right in front of us we’re going to get out (of our vehicles) and respond immediately,” Schmidt said.

“I don’t know what happened at that scene, but absolutely this is not something that happens very often,” he said of the cruiser being stolen.

Using the vehicle’s global positioning system, police were able to locate the stolen cruiser abandoned near Winston Churchill Boulevard and Eglinton Avenue in Mississauga.

According to paramedics, three people are currently in hospital in serious condition as a result of the initial crash.

Details on the genders and ages of the patients were not immediately provided.

The Highway 410 ramp to the eastbound Highway 407 remains currently closed.

Ontario's Special Investigations Unit is now investigating.

The SIU investigates incidents involving police where there has been death, serious injury, or allegations of sexual assault.