Avcı was taken into custody from his house in Bağcılar district of İstanbul in an operation carried out by units from İstanbul Security Directorate Anti-Terror Department.
İstanbul Emniyet Müdürlüğü Terörle Mücadele Şube Müdürlüğü ekipleri, Avcı'yı, Bağcılar'daki evine düzenlenen operasyonda gözaltına aldı.