KATY, Texas (KTRK) -- Fire officials said they believe a lightning strike may be to blame for a house fire Tuesday night in Cinco Ranch.

Authorities said the fire at the home on Mayfield Ridge Lane is one of four locations where crews received calls about possible lightning strikes in the Katy area.

The Willowfork Fire Department said no one was home at the time of the fire, but the flames consumed much of the attic, and three firefighters had to be treated for heat exhaustion.