Daesh terrorist organization has claimed responsibility for the Istanbul attack that killed at least 39 people and wounded dozens of others in the early hours of New Year's Day.
An attacker opened fire on party-goers at the Reina nightclub in Istanbul's Ortaköy district.
At least 39 people, including a police officer, died in the assault. Sixty-nine people were also injured in the incident.
Nationals of Saudi Arabia, Morocco, Lebanon, Libya, Israel, India, a Turkish-Belgian dual citizen and a Franco-Tunisian woman were among those killed in the attack
Only days before the attack, an online message from a pro-Daesh terrorist group called for attacks by "lone wolves" on "celebrations, gatherings and clubs".
Security services had been on alert across Europe for new year celebrations following an attack on a Christmas market in Berlin that killed 12 people.