Center Fire Department (Stations 36, 37, 38), Monaca Fire (Stations 56, 57, 58), Aliquippa Fire Department (Station 91), and Rochester RIT (Station 23) were dispatched to Macy’s at the Beaver Valley Mall at approximately 6:00 p.m. this evening, Monday, May 4th, 2015. A caller reported that smoke was billowing from the roof of the building. The police department arrived on scene and found nothing to be showing from the external building. Units arrived on scene and found that the smoke was caused by the HVAC system. After a thorough investigation all units were put back into service.