Over half a dozen fire crews were dispatched this morning for a structure fire at a vacant commercial building in Hollidaysburg. The fire that was quickly extinguished occurred at the former L Woods Photography business along North Montgomery Street where heavy smoke was seen emanating from inside. Flames were located in the back corner of the building and no one was injured, according to Hollidaysburg Fire Chief Brandon Dibona. State police are reportedly investigating the cause of the fire.