The sources who spoke on condition of anonymity said Gurdal T. is suspected of being a senior leader of contracted officers that FETO is believed to have placed in the Turkish Air Force, APA reports quoting Anadolu agency.
FETO and its U.S.-based leader Fetullah Gulen orchestrated the July 15, 2016, defeated coup attempt in Turkey, which martyred 250 and left nearly 2,200 injured.
Ankara also blames FETO for being behind a long-running campaign to overthrow the state through the infiltration of Turkish institutions, particularly the military, police, and judiciary.