Two inmates were injured, including one with 15 puncture wounds, during a fight Sunday night at a state prison south of Hagerstown, according to a state prison system spokesman.
The altercation was reported at about 9 p.m. at Maryland Correctional Institution-Hagerstown.
Maryland Department of Public Safety and Correctional Services spokesman Mark Vernarelli wrote in an e-mail on Monday that the inmate who had 15 puncture wounds had surgery Sunday night and was expected to fully recover.
A preliminary report said the inmate's back, hand and shoulder were injured, according to Vernarelli. The inmate is expected to be back in prison in two or three days.
The other inmate had a cut on his chest and was treated at the prison, Vernarelli wrote.
His e-mail said an internal investigations unit was looking into the fight and the department wasn't identifying the inmates for now.