Tokat-based teacher couple, identified with initials C.B. and F.B., was detained over their alleged links to the Gülen movement, on May 9.
Accused of having used the ByLock mobile application, the couple was working at a primary school that was closed by the government over ties to the movement.
Turkish authorities claim that ByLock was a top communication tool among followers of the movement, accused of masterminding the July 15, 2016 coup attempt.
The couple was detained at a relative’s house in the capital province of Ankara. While F.B. was released on judicial control, her husband C.B. was put in pre-trial arrest.