Calgary police have arrested three people and seized two children following two drug raids that netted cocaine, marijuana and a substantial amount of cash.
During one of the raids, police say a pitbull-type dog inside the home latched on to the left arm of a tactical team officer.
The dog would not let go of the officer, so another officer shot and killed the animal.
The officer was taken to hospital and got up to 12 stitches to close the wound, but police say the long-term damage to his arm has not yet been determined.
Police say more details, including the names of those charged and the amount of seized drugs, will be released at a later date.