Gilgit's district magistrate imposed Section 144 in the city for two months on Wednesday after unidentified men shot and injured four people in the old polo ground area on Tuesday evening. Sources said Shias were returning home after lighting small fires on nearby hills to mark Prophet Muhammad's (PBUH) birth anniversary (Shias mark the prophet's (PBUH) birthday on 17 Rabiul Awal) when unidentified men shot at them, injuring four people including police constable Muhammad Hussain, in the city's old polo ground area.After hearing gunshots, the entire neighbourhood erupted in gunfire, which continued for about half and hour, sources said, adding that Pakistan Army, Rangers and police reached the spot and cordoned off the area to search for weapons. Sources said police had arrested 32 people in connection with the incident. The old polo ground area is in the city centre and is inhabited by Shias and Sunnis.