One man was burned in an arson fire at a northwest Iowa home for mentally disabled clients.

Fire fighters were called to the Pride Group Home east of Primghar early Wednesday morning. Once at the scene, fire fighters found a storage shed on the property completely engulfed in flames. A man had been burned. He was taken to a local hospital by ambulance, then airlifted to the Hennipin County Hospital in Minnesota. A condition report is not available.

Authorities say the fire was intentionally set with some sort of "liquid accelerant" and the blaze started in the center of the building. Officials plan to file second degree arson charges against the person who set the fire, but they aren’t ready yet to say who that person is.