Istanbul's New Year's revelers killed in nightclub attack

This handout video grab taken from CCTV and released on January 2, 2017 by Haber Turk Gazete newspaper shows an gunman carrying out an attack on the Reina nightclub, on the bank of the Bosphorus, in Istanbul on January 1, 2017. The Islamic State group on January 2, 2017 claimed responsibility for an attack on a nightclub in the Turkish city of Istanbul that killed 39 people on New Year's Eve. In a statement circulated on social media, the jihadist group said one of the "soldiers of the caliphate" had carried out the attack on the Reina nightclub, on the bank of the Bosphorus.

A relative of Yunus Gormek, who was killed in the attack on the Reina nightclub in Istanbul, mourns near his coffin during a funeral in Istanbul.

A woman holds flowers in front of the Reina night club in Istanbul, one day after a gunman killed 39 people, including many foreigners, in a rampage at an upmarket nightclub in Istanbul where revelers were celebrating the New Year.

A woman and her child stand in front of a pop-up memorial set in front of the Reina night club in Istanbul.

People carry the coffin of Yunus Gormek, 23, one of the victims of the Reina night club attack, during his funeral ceremony in Istanbul.

Mother of Fatih Cakmak, a security guard and a victim of an attack by a gunman at Reina nightclub, reacts during his funeral.

Relatives of Ayhan Arik, one of the victims of the Reina nightclub attack mourn during his funeral ceremony on Jan. 1, 2017, in Istanbul. Thirty-nine people, including many foreigners, were killed early on Jan. 1, 2017, when a gunman went on a rampage at an exclusive nightclub in Istanbul where revelers were celebrating the New Year.

A survivor of the nightclub attack waits to retrieve her belongings in front of the Reina nightclub on Jan. 1, 2017.

Flowers and candles are part of a makeshift memorial in front of the Reina nightclub.

Family members of victims of the attack on the Reina nightclub mourn outside the morgue in Istanbul on Jan. 1, 2017.

People lay flowers in front of the Reina nightclub on Jan. 1, 2017.

Family members of victims of the overnight attack at the Reina nightclub, cry outside the Forensic Medical Center in Istanbul on Jan. 1, 2017.

A Turkish police officer stands guard close to the site of an armed attack near the Reina nightclub.

Medics carry a wounded person at the scene after an attack at a popular nightclub in Istanbul, early Sunday, Jan. 1, 2017. Istanbul Governor Vasip Sahin said that an armed assailant has opened fire at a nightclub in Istanbul during New Year's celebrations.

An ambulance rushes from the scene of an attack in Istanbul.

Turkish special force police officers and ambulances are seen at the site of an armed attack.

Medics and relatives of the victims gather near the area at Ortakoy district near night club Reina where an attack killed at least 35 people.

Ambulances rush on the scene of an attack. Private NTV television said more than one assailant may have been involved in the attack. The attacker or attackers are believed to have entered the nightclub in Istanbul's Ortakoy district disguised as Santa Claus, the station reported.

A woman reacts next to an ambulance near the scene of an attack on New Year's revelers in Istanbul.

People leave as medics and security officials work at the attack scene in Istanbul.

Young people leave from the scene of an attack in Istanbul, early Sunday. An assailant opened fire at a nightclub in Istanbul's Ortakoy district during New Year's celebrations, killing dozens of people and wounding dozens of others in what the province's governor described as a terror attack.

People react at the site of an armed attack early on the first of the year in Istanbul.

People walk under rain near Reina night club, the scene of an attack in Istanbul, early Sunday.

Youths embrace near the scene of the New Year's Day attack in Istanbul.

Young people leave from the scene of an attack.

Turkish special force police officers and ambulances are on the nightclub attack scene, Sunday.

A Turkish police officer stands guard on the site of an armed attack.

Medics carry a wounded person from the scene after an attack at a popular nightclub in Istanbul.

A Turkish police officer stands guard on the site of an armed attack as bystanders look on.