No information concerning the identity of the detainees has been released yet.
Earlier on Tuesday, Turkish state media revealed a video of the suspected perpetrator of the deadly terrorist attack at Istanbul's Reina nightclub.
On Monday, Turkish media reported that police was suspecting a citizen of either Uzbekistan or Kyrgyzstan-related to Daesh jihadist group was involved in the attack.
At least 39 people were killed, 69 injured as a result of the attack on the Reina nightclub during New Year's celebrations, according to the Turkish Interior Ministry. So far, 38 out of 39 victims have been identified.
Daesh, a terrorist organization banned around the world, claimed responsibility for the attack.
Since the launch of the investigation, eight people have reportedly been detained.