(North Scituate, RI)--A captain for the Rhode Island State Police who filed a racial discrimination complaint is retiring.Captain Gerald McKinney claimed RISP superintendent Colonel James Manni tried to force him off his command staff by re-opening an investigation into an incident in 2014 when he filed the complaint with the state Commission for Human Rights.Manni asked Connecticut State Police to review an incident involving a member of the RISP command staff, reported as McKinney, who allegedly struck a suspect in custody. McKinney is stepping down after 25 years with the state police.