A suspected drunk driver crashed into the back of a police cruiser waiting in a drive-thru Saturday night, Toronto police Det.-Const. Scott Matthews tweeted Monday.

After the collision, which happened at 10:35 p.m., the driver blew almost four times the legal limit, tweeted Matthews of the Toronto Police Traffic Services Unit. The driver was charged with impaired driving and faces a minimum fine of $2500. No more details were available.

Toronto police arrested 16 people for impaired driving offences between 6 p.m. Friday and 6 a.m. Monday, Matthews also tweeted.

On Friday around 11:30 p.m., York Regional Police responded to an unrelated incident involving a suspected drunk driver in Richmond Hill.

Responding to reports of a collision on the Hwy. 7 off-ramp at Bayview Ave., police discovered the suspect had been involved in two prior collisions.

The driver was behind the wheel of a silver Kia Forte and going fast westbound on Hwy. 7 when the car collided with another vehicle near Leslie St. The driver fled the scene, police said in a news release Monday.

The driver crashed the car into a second vehicle near Valleymede Dr. and again fled the scene, police said. Finally, the suspect continued along Hwy. 7, driving over the median on the Bayview Ave. off-ramp, and collided with a third vehicle before mounting the curb and coming to a halt. The driver of the third vehicle was an eight-month pregnant woman, police said. She suffered minor injuries.

Sunny Patel, 24, of Richmond Hill is charged with impaired operation, over 80 mg of alcohol, dangerous operation of a motor vehicle and two counts of failing to remain.

Twenty-one drivers were charged with offences relating to impaired driving in York Region last week, police said. And in the last year, York police have laid more than 1,600 impaired driving charges.