POLICE fired shots in three incidents yesterday. Four rounds were fired when officers thought one of three suspects they were chasing at the junction of Nelson Street and Sai Yeung Choi Street was reaching for a pistol. Two men were arrested. Later, a sergeant fired a shot in a Reservoir Road, Aberdeen, car park as a fleeing car tried to knock down two officers. Five men escaped. In the third incident, police opened fire on a car as it rammed a roadblock at Castle Peak Road.