New York state police say they’re investigating the weekend death of an inmate who was housed at an upstate medium security prison – reports of which Gov. Kathy Hocul called “deeply troubling” on Monday.

Nearly a dozen staff members are on administrative leave and state officials are investigating after an inmate at a New York medium-security prison died over the weekend, prison officials told USA TODAY Monday.

The death of 22-year-old Messiah Nantwi, an inmate at Mid-State Correctional Facility, has prompted an investigation by the Office of the NY AG and the NYSP.

Eleven staff members have been placed on administrative leave pending an investigation into Saturday’s death of New York prison inmate Messiah Nantwi, the State Department of Corrections and Community Supervision said in a release Monday.

A 22-year-old inmate at the Mid-State Correctional Facility died over the weekend. The cause of death is under investigation.

Messiah Nantwi, 22, was pronounced deceased at Wynn Hospital in Utica.

Messiah Nantwi, of the Bronx, was taken early Saturday from Mid-State Correctional Facility in Oneida County to Wynn Hospital in Utica, according to Beau Duffy, a spokesperson for the New York State Police.