Screenshot/The Telegraph via Twitter

The hunt for the gunman who killed 39 people at a New Year's Eve party in Istanbul intensified on Tuesday with the release of what may be the shooter's "selfie video," ABC News reports. Turkish media, including the state-run Anadolu Agency, circulated the footage, which reportedly shows the nightclub gunman filming himself on his cell phone in a popular Istanbul square:

It is unclear if the video was taken before or after the attack.

Turkish media also reports that the shooter has been identified and is from Central Asia. The man reportedly came to Turkey last November with his wife and two children, who have been detained.