The chief physician of the Akpınar State Hospital in Kirsehir province, identified only by his initials C.K., has been caught and put in pretrial detention over his alleged use of ByLock.

State-run Anadolu news agency reported on Saturday that police detained C.K. at his home in Ankara as part of a Kirsehir-based investigation into the Gulen movement.

Following a police search at his place, he was taken to Kirsehir where he was later jailed pending trial.

ByLock is a smartphone application, which Turkish authorities believe is a communication tool among supporters of the Gulen movement, accused of masterminding the July 15, 2016 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.