The identity of the gunman who killed 39 people in an attack on the Reina nightclub in Istanbul on New Year's Day has been established, Foreign Minister Mevlut Cavusoglu said.
However authorities in Turkey have not revealed any further information about the suspect.
The gunman, who fled after the attack, remains at large.
Sixteen people have been detained as part of the investigation into the shooting.
Bullet marks on tables, punctured cushions and a single high-heeled shoe are left as testaments to the New Year massacre at the Reina club.
At least 39 people were killed when a gunman opened fire on a nightclub where more than 500 revellers were celebrating the New Year.