The prosecutors in Ankara, the capital of Turkey, issued arrest warrants for 24 suspects, including active-duty soldiers, as part of an investigation into the group's secret structure in the Turkish Land Forces.

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.