Ugur Demirok, who was a member of the Fetullah Terrorist Organisation, had an arrest warrant on charges of "establishing and leading an armed terrorist organisation," security sources say.
The arrest warrants were issued after an investigation including several testimonies led authorities to believe the suspects are linked to the alleged orchestrator of the July 2016 coup attempt Fetullah Gulen.
Suspects are accused of using the ByLock mobile app, an encrypted messaging app used by followers of Fetullah Gulen, who is believed to have orchestrated last year's attempted coup.
The journalists, associated with the Cumhuriyet daily, continue to face a travel ban and will appear before trial to face terror charges, says court order.
Turkish prosecutors accuse 17 employees of "Cumhuriyet" newspaper of aiding the PKK and the Fetullah Terrorist Organisation (FETO).
Warrants were issued for the detention of 115 people allegedly involved in FETO-linked activities. The 115 academics work in universities and institutions that fall under the Prime Minister's office.
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