Mackinac, MI- WOOD8-TV -The Mackinac County Courthouse is closed indefinitely after a carbon monoxide leak.

Fire crews were called to the courthouse about 1:30 p.m. The crews found a malfunctioning boiler causing the leak into the basement and first floor offices.

All personnel was evacuated and the building was closed for the remainder of the day. The building is to reopen after the malfunction is repaired.