A retired Baltimore police sergeant was indicted for allegedly planting a pellet gun on a suspect after another officer intentionally ran him over, prosecutors said.

Former Baltimore Police Department Sgt. Keith Gladstone pleaded not guilty to federal civil rights and witness tampering charges on Tuesday in connection with a 2014 incident that involved members of a corrupt police task, according to an indictment.

Acting Baltimore Police Commissioner Michael Harrison suspended three unnamed officers in the wake of the indictment and said they would be investigated by the department’s Internal Affairs unit.

“Based on today’s indictment and other information provided to me, I am suspending three current Baltimore Police officers pending the outcome of an Internal Affairs investigation,” Harrison said in a statement. “A fourth officer listed in today’s indictment had already been suspended and will also be investigated by our Internal Affairs section.”……..More Here