A fatal fire is under investigation in east-central Iowa. The State Fire Marshal is looking into a mobile home fire that was reported around 9:20 Wednesday night in Williamsburg.

Investigators say a 39-year-old man was alone in the trailer when the fire broke out and he died at the scene. His name is being withheld. The trailer is a total loss. The cause of the fire is not known yet but officials say it does not appear to be suspicious.