MONROEVILLE, Pa. — (WPXI) – The Monroeville Police Chief says a large police presence at the Monroeville Mall stemmed from a 911 call about a dispute between two people that quickly escalated to fears of an active shooter. Police responded to the mall just before 3 p.m. Sunday. The mall was put into lockdown, but that lockdown was lifted around 4 p.m. Chief Doug Cole says the initial 911 call was about a dispute between two people and one person possibly having a gun. While police were en route, they started getting reports of shots fired. The people involved in the alleged fight, which Cole said happened outside of a bathroom, were not found when police arrived. “Our information was very sketchy,” Cole said. “It continued to evolve, and we could never find anyone that was ever shot or even any physical evidence that a gunshot had even gone off. It appears at this time this was totally a mistake.” Cell phone video showed the chaotic moments as officers with their guns out raced through the mall’s food court shouting, “Everyone down,” as they looked for who they thought was an active shooter. Many shoppers evacuated others hid in stores.