Nearly two dozen officers and inmates at an Ohio correctional institution are being treated for some sort of illness.
According to reports, 15 guards, five nurses and one inmate at the Ross Correctional Institution in Chillicothe, about an hour south of Columbus, became sick after being exposed to an unknown substance.
Officials say fentanyl is expected to be the culprit, as several are experiencing symptoms related to a drug overdose.
Those suffering are being taken to the hospital. Investigators are still working to confirm what the exact substance was, but extra doses of Narcan are being brought to the prison to help reverse the effects of opioid overdoses.
The state prison for men can house up to 25-hundred inmates and employs 300 staff members.