The gunman who killed 39 people at an Istanbul nightclub fired up to 180 bullets, Turkish media report.
More details are emerging of the attack at the upmarket Reina nightclub where hundreds of revellers were celebrating the new year early on Sunday.
The unidentified assailant arrived by taxi before rushing through the entrance with a long-barrelled gun he had taken from the boot of the car.
The motive is unclear but suspicion has fallen on the Islamic State (IS) group.
IS has already been linked to at least two attacks in Turkey last year.
The attacker fired indiscriminately at people, starting with a security guard and a travel agent near the entrance. Both were killed.
The assault lasted seven minutes and the gunman is reported to have removed his overcoat before fleeing during the chaos.
A manhunt is under way, Interior Minister Suleyman Soylu confirmed. “We hope the attacker will be captured soon.”