The city of Newburgh's police chief suddenly resigned Wednesday.

Chief Arnold "Butch" Amthor told News 12 he resigned and decided to "part ways" with the city after completing the mandatory reform plan.

Amthor is the city’s third police chief in less than a decade.

City officials referred to Amthor’s resignation as a retirement. They say they’re sorry to see the longtime public servant go.

There is no word on who will be appointed as acting chief.