Several businesses were damaged by fire at a strip mall on the 100 block of West Moreland Road in Montgomery County on Sunday afternoon.
Investigators say according to witnesses, the fire started behind a dryer at the Highlander Center Self Service Laundry at the Shoppes at Blair Mill in Horsham.
The flames quickly spread to adjoining businesses including Romano's Pizzeria and Foresight Optical.
Three firefighters were taken to the hospital with minor injuries. No one else was injured.
There's no word yet on what caused the fire.