They were called in after a teen, fleeing police, was bit by a service dog.
The Special Investigations Unit has cleared a London Police officer in a case where a teen was injured by a police dog.
In April, police say the 17-year-old ran from a traffic stop and hid in a backyard.
A police service dog found the teen, biting him behind the knee and causing a serious injury.
The SIU says there’s no evidence the officer committed a criminal offence.