PITTSBURGH — Pittsburgh’s police chief is resigning.

Chief Cameron McLay held a news conference Friday announcing his decision.

McLay has angered some rank-and-file officers by addressing the Democratic National Convention in July and because of other differences that McLay says are emerging as he tries to reform the department and improve relations with black citizens.

The union held a no-confidence vote in September and the Citizens Police Review Board has since determined McLay violated a city code banning partisan political activity by speaking at political convention in uniform.

By Associated Press