A 19-year-old young man on Sunday committed suicide by shooting himself outside his residence in Delhi, police said.At around 6.30 a.m., Gulshan's father found him sprawled with a gunshot injury in Dwarka's Matiala area, Deputy Commissioner of Police Anto Alphonse said.He was rushed to a hospital where he was declared dead. The hospital alerted the police regarding the youth, Alphonse added."During investigation, it was found that Gulshan had received a gunshot injury from very close range," the officer said, adding that four live cartridges were recovered from his pocket."It appears to be a case of suicide... We are investigating the case from other angles too," he added.