An Edmonton police officer won't face charges for fatally shooting an unarmed man in 2021, despite Alberta's police watchdog finding reasonable grounds that the officer committed a crime.

The Alberta Serious Incident Response Team (ASIRT) investigation concluded there are "problematic" pieces about the officer's account of what happened.

The family of Steven Nguyen identified him as the 33-year-old man who was killed in the north-central Rosslyn neighbourhood on the night of June 5, 2021. They've…