Troopers: Mix of heroin and fentanyl sickened 29 at Ross Correctional Institution https://t.co/B5MjkedT8u pic.twitter.com/TIGsVMBOqm

— Enquirer (@Enquirer) August 30, 2018

The Ohio State Highway Patrol said a mixture of heroin and fentanyl has been identified as the substance that sickened 29 people, including staff and inmates, at Ross Correctional Institution in Chillicothe on Wednesday.

The substance that caused an apparent overdose of one inmate and required medical attention for 27 staff members. Approximately 31 inmates who were not affected were removed from the cellblock and relocated inside the facility.