BILLINGS, Mont. (AP) — Health officials in southern Montana have reported about 30 confirmed COVID-19 cases on Friday, including several inmates at the Big Horn County jail.

The Billings Gazette reported that County Public Information Officer Rhonda Johnson said all of the inmates who tested positive are asymptomatic, and were moved into quarantine at the facility in Hardin.

Johnson could not confirm exactly how many inmates at the jail had tested positive, but there are 36 in the facility.

Big Horn County has 206 active COVID-19 cases, the second highest in the state. The county includes both the Crow and Northern Cheyenne reservations.