The Crown withdrew the charges of resisting arrest and assaulting police against Chief Allen Adam in a Fort McMurray court on Wednesday.

Adam was stopped in March for an expired plate. A 12-minute video shows him yelling profanities at RCMP officers before he was violently tackled to the ground and punched in the head by a responding Mountie.

The province’s police watchdog is now investigating and Prime Minister Justin Trudeau called the arrest shocking.

In a media briefing on Wednesday, Adam called on Canada to consider cross-cultural police training as well as setting up Indigenous police forces with full authority.