Trumbull County Sheriff's Office Major Thomas Stewart says the hostage situation ended peacefully and, "It's all over." He says the inmates talked to hostage negotiators and "decided to give it up."
He says the correction officer wasn't physically harmed but is being evaluated.
Officials say the inmates grabbed and handcuffed the officer Wednesday afternoon at the Trumbull County Jail in Warren and held him for several hours.
Other employees left the jail. Streets in the area were closed as police swarmed.
The Ohio State Highway Patrol sent a hostage negotiator to the jail. The FBI, the U.S. Marshals Service and local police helped.