Michael Butler's campaign over the death of his wife has now gone to Edmonton's police commission.

Butler filed an official complaint against Edmonton police Friday, asking that it be mandatory for police to check for any restraining orders when a repeat offender is arrested.

His brother Ken, 24, is in police custody undergoing a 30-day psychiatric evaluation. Ken has not been charged in his sister-in-law's death, but police have called him a suspect.

Stephanie Butler, 25, was found dead on April 7 in the couple's southwest Edmonton home.

Her husband, who was out of town when his wife's body was found, has told reporters that police should have checked on his wife after his brother was arrested on April 6 in connection with an assault on a cab driver near their home.

Just days before his wife's death, Michael Butler had called police when his brother tried to break into their house. Ken Butler was released on $300 bail and a justice of the peace ordered him to stay away from the couple's home.

Last week, police Chief Mike Boyd told a news conference that the suggestion his officers could have done something to prevent her death is wrong.

"I believe that our officers did what they could do with the information they had at that time," he said.