Wausau, WI – A Wausau man is alive after being exposed to large amounts of carbon monoxide, but he remains hospitalized.

Newsline 9 reports that the man inhaled life-threatening amounts of carbon monoxide at a home in the 800 block of East Wausau Avenue Sunday night. He was found unconcious with a dog by the homeowner around 8:15 p.m. according to authorities.

Right now, police believe the cause of the leak was accidental and due to a generator in the basement.