New Delhi, April 27 -- A Delhi Police officer was arrested after he allegedly shot dead a 21-year-old man and injured another following an altercation over noise in Dwarka in the early hours of Sunday, officials said. Police said he was on the run and was arrested late on Sunday evening after a 15-hour chase. The head constable, identified by his first name Neeraj, is posted with the Delhi Police's Special Cell, officials said. According to officials, the incident took place when the cop objected to a group of people returning from a party "making noise" on the street in front of his house. He stepped down, got into a fight with them, and fired a single shot at one of the victims. The bullet pierced the victim's chest and struck a second man, who was critically injured. While the victim's family alleged the shooting was motivated by what they described as a "hate crime," police said the allegation is yet to be verified. The accused was off duty at the time and officials said they are investigating whether he used his service pistol in the crime. According to investigators, the incident occurred around 2am in Jaffarpur Kalan when the officer got into an argument with a group of men returning from a birthday celebration. The deceased was a Zomato delivery executive. Deputy commissioner of police (Dwarka) Kushal Pal Singh said police received a call from RTR Hospital around 2.30am about two men admitted with gunshot injuries. Police said the incident took place when 13 people, including two minors, had gathered on the main road to leave after the celebrations. "Six to seven others remained standing on the road, talking, when Neeraj, allegedly disturbed by the noise, came down from his house and confronted them, leading to a heated exchange," the DCP said. "During the argument, Neeraj pointed his weapon at one of them and fired. The bullet pierced the victim's chest and exited, hitting another in the abdomen," he added. Neeraj fled the spot after the shooting, according to eyewitnesses and police. The deceased victim's family alleged he was targeted because of his identity. Police said the hate-crime angle is being examined but has not been established so far....