The arrest warrants were issued after prosecutors determined that the suspects had communicated with the group members via landlines or payphones, and used Bylock, an encrypted messaging app developed and exclusively used by members of the group.

While 21 suspects have been taken into custody, security forces are still looking for the remaining fugitive suspects.

Since May 2016, Turkey has classified the FETO organization as a terrorist organization under the assigned names Fethullahist Terrorist Organization and Parallel State Structure. 

After the failed coup attempt in 2016, the government of Turkey blamed the group for the coup and authorities have arrested thousands of soldiers and judges who have links to the organization. (ILKHA)