A former Boston police officer who was beaten more than 25 years ago by colleagues who mistook him for a shooting suspect will be the new leader of the city's police department, Mayor Michelle Wu announced. Michael Cox, 57, will return to his hometown of Boston after working as the police chief in Ann Arbor, Michigan, to lead the same force he once brought a civil rights case against over his beating by fellow cops. Cox, who is Black, will take over as commissioner next month. Before becoming chief in Ann Arbor in 2019, Cox was part of the Boston police force for 30 years, where he rose through the ranks after fighting for years to get justice over his beating that left him seriously injured. Cox was working undercover in plainclothes as part of the gang unit in January 1995 when officers got a call about a shooting. Cox, dressed in jeans and a sweatshirt, spotted the suspect. The suspect started to scale a fence and Cox was struck from behind just as he was about to grab the man. He was kicked and punched by fellow officers, suffering head injuries and kidney damage. Cox has described facing harassment in an effort to silence him after the beating became public despite efforts by his colleagues to cover it up. A department injury report said Cox lost his footing on a frozen puddle, causing him to fall and crack his head. Cox chose to stay in the police force after what happened to him and try to improve things instead of walking away from a job he loved.