Officers were patrolling on Atlantic Street in Halifax at 4:45 a.m. on Sunday, October 11 when they noticed an individual acting in a suspicious manner outside a residence in the 5700 block. Officers approached the man to enquire on his actions and then went to assist this individual in knocking at the door of the residence to awaken a roommate. As the man and an officer were knocking on the door, a resident answered the door carrying a firearm. The 23-year-old man was quickly taken into custody and it was determined the firearm was a pellet gun. This matter remains under investigation.