Michael Proctor, the fired Massachusetts State Police trooper who worked as the lead investigator in the Karen Read case, returned to court on Tuesday in connection with a separate murder investigation.

Michael Proctor, the former lead investigator in the Karen Read case, was heckled outside the courthouse in Dedham Tuesday.

The head of the Massachusetts State Police says firing Michael Proctor was a “righteous decision” — and that he doesn’t expect the former trooper’s appeal to the Civil Service Commission to