Johnsonâs last day was Monday.
Lt. Michael Ziemba will serve as interim chief until a search concludes. Officials hope to have a search for a permanent chief completed by late spring.
Johnson has been under heavy criticism from community members after some behaviors on his part came to light as part of a lawsuit this summer. The civil suit was filed by a department employee who alleged sexual and racial harassment in the workplace involving the chief and others.
Then it came to light that, under his watch, one of his officers was investigated and disciplined by the Massachusetts State Police for sexual assault but wasnât fired.