PHILADELPHIA (CBS) — Flames and heavy smoke tore through a paper warehouse in Bridesburg for hours Thursday night. Officials say the firefighters who were inside of the building trying to extinguish the blaze were pulled because of fears it could collapse. One firefighter suffered minor injuries and was transported to the hospital. Fire officials say there are no other injuries at this time. They say the paper that was stored inside the facility is what’s keeping the fire going. The building has been declared a complete loss and there is no word on a cause.