This still photo, taken from surveillance footage and released on Monday, January 2, is believed to show the gunman responsible for carrying out a New Year's Day attack on the Reina nightclub in Istanbul. The popular nightclub was attacked shortly after midnight on Sunday, January 1. At least 39 people were killed and 69 were wounded, Turkey's Interior Minister said. Authorities are still <a href="http://www.cnn.com/2017/01/02/europe/turkey-nightclub-attack/index.html" target="_blank">searching for the attacker.</a>
This still photo, taken from surveillance footage and released on Monday, January 2, is believed to show the gunman responsible for carrying out a New Year's Day attack on the Reina nightclub in Istanbul. The popular nightclub was attacked shortly after midnight on Sunday, January 1. At least 39 people were killed and 69 were wounded, Turkey's Interior Minister said. Authorities are still searching for the attacker.
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A Turkish special forces officer stands near the Reina nightclub on January 2. ISIS claimed responsibility for the attack in a statement posted to Twitter.
A Turkish special forces officer stands near the Reina nightclub on January 2. ISIS claimed responsibility for the attack in a statement posted to Twitter.
OZAN KOSE/AFP/Getty Images
A friend of someone killed in the attack reacts near victims' pictures outside the nightclub on January 2.
A friend of someone killed in the attack reacts near victims' pictures outside the nightclub on January 2.
OZAN KOSE/AFP/Getty Images
A police officer inspects cars near the scene on January 2.
A police officer inspects cars near the scene on January 2.
Halit Onur Sandal/AP
People carry the coffin of Yunus Gormek, a victim of the attack, during a funeral ceremony in Istanbul on January 2.
People carry the coffin of Yunus Gormek, a victim of the attack, during a funeral ceremony in Istanbul on January 2.
BULENT KILIC/AFP/Getty Images
People mourn outside the Forensic Medical Center in Istanbul on January 1.
People mourn outside the Forensic Medical Center in Istanbul on January 1.
Suleyman Kaya/DHA/Depo Photos/AP
Relatives of Ayhan Arik, one of the victims of the attack, cry during a funeral ceremony in Istanbul on January 1.
Relatives of Ayhan Arik, one of the victims of the attack, cry during a funeral ceremony in Istanbul on January 1.
OZAN KOSE/AFP/Getty Images
An ambulance rushes from the scene of the attack on January 1.
An ambulance rushes from the scene of the attack on January 1.
Halit Onur Sandal/AP
A woman is consoled at the site of the attack.
A woman is consoled at the site of the attack.
YASIN AKGUL/AFP/Getty Images
Medics wheel a stretcher at the scene.
Medics wheel a stretcher at the scene.
YASIN AKGUL/AFP/Getty Images
Police officers stand guard.
Police officers stand guard.
Burak Kara/Stringer/Getty Images
People leave the scene of the attack.
People leave the scene of the attack.
STR/AP
A medic reacts near the scene of the attack.
A medic reacts near the scene of the attack.
Burak Kara/Getty Images
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A wounded victim is rushed from the scene.
A wounded victim is rushed from the scene.
IHA/AP
Medics and security officials work at the scene of the attack.
Medics and security officials work at the scene of the attack.
IHA/AP
A wounded person is put into an ambulance.
A wounded person is put into an ambulance.
STR/AP
People walk in the rain near the scene of the attack.
People walk in the rain near the scene of the attack.
Halit Onur Sandal/AP
An ambulance transports those wounded in the attack.
An ambulance transports those wounded in the attack.
Rex Features/AP