There were strong indications he entered Turkey illegally through its eastern borders in January 2016 and it was clear the attack was carried out on behalf of Islamic State, Sahin said. e was being questioned at Istanbul police headquarters, while other people were detained in raids across the city targeting Uzbek Islamic State cells, the state-run Anadolu news agency said. He was found at one of the five addresses," Sahin said. Masharipov had first rented an apartment in Basaksehir, another outlying Istanbul district, before switching addresses a day or two before the attack, the Istanbul governor said. On Jan. 1, the attacker shot his way into the Reina nightclub and opened fire with an automatic rifle.

Source: Egypt Independent January 17, 2017 11:22 UTC