As Turkish police deepen the probe into the terror attack that killed 39 people and injured 65 others early on Sunday, new details on the attacker's identity have emerged. The clearest images of the attacker captured by security cameras were released by the police on Monday, showing the terrorist, believed to have originated from Central Asia, to be around 25 years of age.

Initial police reports suggested that the suspect may be from Uzbekistan or Kyrgyzstan, while officials are also investigating the possibility that the attacker may be from Xinjiang in western China.

Meanwhile, it was revealed that the suspected assailant brought his family to central Konya province two months ago. He allegedly came to the city with his wife and two children to prevent drawing attention. During her testimony after being detained, the wife said that she was not even aware of her husband's "sympathies" with the Daesh terrorist organization.

According to the Hürriyet and Karar newspapers, police had also established similarities with the high-casualty suicide bomb and gun attack at Istanbul's Atatürk Airport in June and was investigating whether the same Daesh cell could have carried out both attacks.

Kyrgyzstan's Foreign Ministry said it was looking into the media reports. "We have ordered the consul in Istanbul the check this report that has appeared in the press," the Interfax news agency quoted ministry spokeswoman Aiymkan Kulukeyeva as saying Monday.

"According to preliminary information, this information is doubtful but we are checking all the same."

The Daesh terror group claimed the attack on Monday. Police arrested eight suspects on Monday in connection with the nightclub attack.

According to experts who examined the footage of the attack, the suspect looks to have been professionally trained on how to use the weapon.

In the footage, he is seen wearing a green shirt, a dark pair of trousers and black boots, firing his long-barreled weapon, aiming people's upper bodies.

Over the course of the attack he changed six chargers and fired over 180 bullets, according to the investigation.

The suspect went upstairs after entering the Reina nightclub and started firing on revelers, before going downstairs to continue shooting. According to witnesses, he also shot people lying on the ground in the head. The attack reportedly lasted for seven minutes.

He then went to the kitchen, and stayed there for approximately 13 minutes before changing his clothes, taking off his coat, and escaping from the scene amid continued panic. He also cleaned his weapon before leaving the scene.

He then got in a cab and got out in nearby Kuruçeşme neighborhood after telling the driver he had no money to pay.

Investigators found a total of 500 Turkish liras in the pocket of the coat that he left in Reina and police are investigating whether he was wearing two coats when he entered the club.

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