Police are searching for a gunman after an innocent Walmart employee was shot during an apparent dispute between two men inside a Pennsylvania store Friday evening, authorities said. Officers responded to the Walmart at 50 McDade Blvd. in Darby Township, Delaware County, shortly after 7 p.m. after reports of gunfire inside the store. "There is no threat to the public," Sousa said, adding officers have cleared the Walmart and nearby businesses. CLICK HERE TO DOWNLOAD THE FOX NEWS APPThe investigation remains ongoing.