Firefighters battled a smoky blaze at a commercial printing company in Indiana County Tuesday morning.
Crews responded to fire Creps United Publications, which is located off of Philaelphia Street in White Township, which sent up smoke that could be seen for miles, according to WTAE-TV.
The news station reported that the rear of the building caved in due to the intense heat.
Two firefighters were injured when a hose broke and hit both of them in the face. A third suffered minor burns while a fourth sustained unspecified injuries.
Officials said there were about 50 employees inside the structure when the fire occurred.
No injuries to civilians were reported.