Noida, Sept. 4 -- A 25-year-old man who shot himself in the head with a pistol at Sector 134, Jaypee Kosmos apartment, on August 31, died late Tuesday night after treatment for three days , police said. The exact reason behind the step is yet to be ascertained. However, it was revealed that his female friend left him around two months ago, and he lost his job about a month ago. On the basis of the complaint from his family, the police registered a case under Section 109 (attempt to murder) of the BNS against an unidentified suspect at the Expressway police station. Police said the deceased, who originally hailed from Bulandshahr, was residing in a shared accommodation in Sector 137, Jaypee Kosmos. On August 31, he, along with eight to nine friends, was celebrating a friend's birthday. Around 2 am, while his friends were busy partying, he went to another room and clicked a photo posing with a pistol pointed at his head for a Snapchat story. Police said he uploaded the story and, before anyone could see it, shot himself in the head. The bullet pierced his head, but he initially survived, and his friends rushed him to a nearby private hospital where he was undergoing treatment. "After three days of treatment, he succumbed to his injuries late Tuesday night," said Twinkle Jain, Assistant Commissioner of Police (ACP), Noida....