2 foreigners arrested at Istanbul airport in nightclub massacre probe

Turkish authorities on Tuesday arrested two foreign nationals at Istanbul’s Ataturk airport in connection with the nightclub terror attack early New Year’s Day that left 39 people dead, state-run Anadolu reported.

There were no details available on their nationalities. A total of 16 people have been arrested in connection with the investigation, and Turkish authorities are still on the hunt for the gunman who carried out the attack at the Reina nightclub. Dozens more were wounded.

Police released this image from a selfie video shot by the terror attack suspect.

Suspect seen in selfie video

Monday, police released a video that the suspect apparently took of himself in a market near the nightclub. Neither his name nor his nationality have been released.

Laith Alkhouri, a director at Flashpoint, an American business risk intelligence company tracking terrorist and cyber threats, told CNN the “selfie video” featuring the man in Taksim square was first posted on a pro-ISIS Telegram account before being broadcast by Turkish media.

Alkhouri said that suggests the attacker was part of a network supportive of or linked to ISIS, and that he had shared the selfie footage with them before or after the attack.

ISIS claimed responsibility for the attack in a statement posted to Twitter, but the claim cannot be independently verified by CNN. It boasted about the first major terrorist attack of 2017.

“In continuation of the blessed operations which ISIS carries out against Turkey, a soldier of the brave caliphate attacked one of the most popular nightclubs while Christians were celebrating their holiday,” the statement read.

‘I prayed that it will end soon’

New details emerged about the gunman. Police told Haberturk newspaper the attacker took a taxi from Zeytinburnu, a neighborhood near the Istanbul airport, to a district near the club. Haberturk reported the attacker put his backpack in the trunk of the taxi.

Turkish news agency IHA reported that, according to the taxi driver, the attacker got out of the vehicle in Ortakoy, about four minutes away from the nightclub.

Surveillance video of the gunman showed him first shooting a security guard and police officer at the entrance of the nightclub.

Then, according to an interview with the club’s DJ in the Turkish daily Hurriyet, the gunman stood near the DJ booth and started shooting. He changed magazines in the weapon several times and fired more than 100 bullets, Hurriyet said.

“I prayed that it will end soon, then it ended,” the DJ told Hurriyet. “He possibly changed his clothes. We heard police 5-10 minutes later.”

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Updated 7:33 PM EST, Tue January 3, 2017

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Video shows gunman entering Istanbul nightclub

02:39 - Source: CNN

Deputy Prime Minister Numan Kurtulmus has said the attacker took advantage of the ensuing chaos and slipped out of the club.

According to Haberturk, the shooter got into a cab after the attack but got out a short distance away, in the Kurucesme neighborhood, because he told the cab driver he didn’t have any money. The driver told police that the man borrowed his phone and made a call, but details of that call have not been released, Haberturk reported.

READ: Turkey nightclub attack claims victims from 14 countries

Turkish and US officials have called the attack an act of terrorism, and Turkish authorities believe the suspect acted alone.

US President Barack Obama spoke with Turkish President Recep Tayyip Erdo?an on Tuesday. The leaders discussed the ongoing fight against terrorism and coalition efforts against ISIS in Turkey’s southern neighbors, Iraq and Syria, the White House announced.

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.

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 friend of someone killed in the attack reacts near victims' pictures outside the nightclub on January 2.

A police officer inspects cars near the scene on January 2.

People carry the coffin of Yunus Gormek, a victim of the attack, during a funeral ceremony in Istanbul on January 2.

People mourn outside the Forensic Medical Center 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.

An ambulance rushes from the scene of the attack on January 1.

A woman is consoled at the site of the attack.

Medics wheel a stretcher at the scene.

Police officers stand guard.

People leave the scene of the attack.

A medic reacts near the scene of the attack.

A wounded victim is rushed from the scene.

Medics and security officials work at the scene of the attack.

A wounded person is put into an ambulance.

People walk in the rain near the scene of the attack.

An ambulance transports those wounded in the attack.

Attack at Istanbul nightclub

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PKK denies involvement

The militant Kurdistan Worker’s Party, or PKK, distanced itself from the attack.

“No Kurdish forces have anything to do with this attack,” the PKK said. “The Kurdish freedom fight is also the fight for democratization of Turkey. That’s why we won’t target innocent and civilian people.”

Those killed in the attack were from 14 countries, including India, Morocco, Jordan, Canada, Russia, Tunisia, Saudi Arabia and Kuwait.

CNN’s Holly Yan, Schams Elwazer, Karen Smith, Sara Sirgany, Steve Almasy, Gul Tuysuz, Nadeem Muaddi, Laura Koran, Joel Williams, Steve Brusk, Mayra Cuevas, Paul Cruickshank and Darran Simon contributed to this report.