TOPEKA, Kan. (AP) — Authorities are investigating the cause of a Topeka apartment fire that killed three women and injured a man.

The Topeka Capital-Journal reports that the fire was reported around 8:20 a.m. Monday at the 12 unit, three-story apartment building in the central part of the city.

The survivor was taken in an ambulance to a Topeka hospital, where his condition wasn’t immediately known.

Topeka police Maj. Darin Scott said he smelled smoke while driving near the burning apartment and called in the fire. First-arriving fire crews found heavy smoke and flames pouring out of the back portion of the apartment building.

It took about an hour to bring the blaze under control. Topeka Fire Marshal Mike Martin provided few details about the fire, saying more information would be released later.