An Islamic State of Iraq and the Levant (ISIL) militant who killed 39 people while wounding 65 others in a nightclub in Istanbul’s Ortaköy district on Jan. 1, Abdulkadir Masharipov was arrested on Feb. 11, state-run Anadolu Agency has reported.

Axar.az reports that, at least 39 people, including a police officer, were killed when 34-year-old Uzbek citizen Abdulkadir Masharipov opened fire on New Year’s Eve revelers at the Reina nightclub in the Ortaköy neighborhood at about 1:15 a.m. on Jan. 1.

Masharipov was captured in the Esenyurt district of Istanbul late on Jan. 16 and his interrogation is still ongoing.

Four other people, including a man of Kyrgyz origin and three women, were also detained along with Masharipov.