The teachers were working at Fethullah Gulen Organization-linked schools shut down following the coup attempt.

Eleven suspects allegedly used the group’s encrypted messaging application ByLock.

Separately, four Fethullah Gulen Organization-linked suspects were held in the northwestern Edirne province.

Fethullah Gulen Organization and its U.S.-based leader Fetullah Gulen orchestrated the defeated coup attempt of July 15, 2016, which left 251 people killed and nearly 2,200 injured.

Ankara also accuses Fethullah Gulen Organization of carrying out a long-running campaign to overthrow the Turkish state through the infiltration of state institutions.