An inmate at the Sterling Correctional Facility died at a hospital with COVID-19 symptoms, the Colorado Department of Corrections said Friday evening.

According to the DOC, the 86-year-old inmate was taken to the hospital on April 27 with coronavirus symptoms.

“The inmate (had) been residing on the east side of the Sterling Correctional Facility. The unit he lived in has been quarantined and inmates will continue to be monitored,” the DOC said in a statement.

The inmate’s name has not been released. His official cause of death will be determined by the coroner’s office.

Sterling is the site of the state’s largest COVID-19 outbreak. As of Friday, 241 inmates and 11 staff members had confirmed cases of the disease, according to state health officials.