Baltimore police sergeant indicted for planting BB gun on victim intentionally run over by fellow officer
Former Baltimore Police photo of former sergeant Keith Gladstone

Federal prosecutors in Maryland indicted a former Baltimore Police sergeant on Tuesday for planting evidence, WBAL-TV reports.

Former Sgt. Keith Gladstone was charged with conspiracy to deprive civil rights, conspiracy to commit offenses against the United States and witness tampering.

"In light of the indictment, the Baltimore Police Department announced Tuesday that three other officers would be suspended and investigated by the Internal Affairs department," The Baltimore Sun reports.

Gladstone is accused of planting a BB gun on Demetric Simon, who had been intentionally run over by Sgt. Wayne Jenkins.

Gladstone pleaded not guilty and was released on his own recognizance.