A former assistant professor from now-defunct Meliksah University, identified as H.A., was put in pretrial detention over his alleged ties to the Gulen movement.

State-run Anadolu news agency reported Feb 12 that H.A., briefly detained and released pending trial in the same investigation earlier, was arrested after cyber police found out that he used ByLock mobile app.

H.A. was an assistant professor at Kayseri-based Meliksah University’s Department of Economics and Finance until it was shuttered over Gulen links in the aftermath of the July 15, 2016 failed putsch.

ByLock is a smartphone application, which Turkish authorities believe is a communication tool among supporters of the Gulen movement, accused of masterminding the coup attempt. The movement denies involvement.

Tens of thousands of people, including civil servants, police officers, soldiers, businessmen and homemakers, have either been dismissed or arrested for using ByLock since the failed coup last year. Among such arrestees is Amnesty International’s Turkey bureau chief, Taner Kilic.