The embattled lead investigator in the death of Boston cop John O'Keefe has been fired from Massachusetts State Police after an internal investigation.

During the trial, Read’s lawyers accused Proctor of manipulating evidence and conducting a biased investigation. They based the allegation in part on text messages he sent to friends, relatives and supervisors that showed him using offensive and vulgar language to describe Read.

State Police said in a statement Wednesday that Col. Geoffrey Noble accepted the Trial Board’s recommendation to terminate Michael Proctor, of Canton.