Multiple lanes of Highway 410 were closed for several hours this morning in Brampton following a traffic stop where a stun gun was fired at a civilian by police.

Police say a traffic stop was conducted in the northbound lanes of the highway near Clark Boulevard at around 2:30 a.m. after officers encountered a suspected impaired driver.

At some point, police say there was an interaction between the officers and the passenger of the vehicle, which prompted police to use a conducted energy weapon on the passenger.

Both the driver and passenger were taken into custody and the passenger was subsequently transported to a local hospital to be assessed.

Highway 410

Police were forced to shut down three northbound lanes of the highway in the event that the province's police watchdog was called in to investigate.

It took several hours before officers received word that the passenger's injuries were not serious and the Special Investigations Unit (SIU) would not be invoking their mandate.

The SIU is an arm’s length agency that is called in to investigate any incident involving police and a member of the public that results in death, serious injury, or an allegation of sexual assault.

Highway, 410

All lanes of the highway reopened shortly before 10 a.m.

Investigators later said a firearm was found inside the vehicle and both occupants would face firearm related offences and appear in court in Brampton sometime on Thursday.