Turkish media have broadcast a video of a man they say is the gunman who killed 39 people during the New Year's attack on an Istanbul night club. The video appears to be from a cell phone the man is carrying as he walks around Istanbul's Taksim square. He spends much of the time looking into the camera, but does not speak. It is unclear when the video was recorded. <br/><br/>Authorities had earlier released a grainy image of the suspected shooter taken from security camera footage. Turkish media also reported yesterday that the authorities detained two foreign nationals at Istanbul's Ataturk airport in connection with the attack. No other details were given. Eight people were, earlier, detained.