In the fourth wave of arrests in connection to the investigation in the February 28th, 1997 'postmodern coup', 17 suspects were detained, two of which were questioned and subsequently released while the remaining 15 were transferred to the courts.

Once seen by the Ankara 11th High Criminal Court, Lieutenant General Tevfik Özkılıç, Major Berkay Turgut, Major General Mehmet Faruk Alpaydın, Brigadier General Celalettin Bacanlı, Brigadier General Mehmet Ali Yıldırım, Brigadier General Metin Keşap, retired Lieutenant General Mustafa Bıyık, retired Lieutenant General Hakkı Kılınç, retired Major General Erdal Şenel, Retired Major General Çetin Dizdar, retired Major General Çetin Saner were arrested pending trial, while retired officers Staff Colonel Erkan Yaykır, Retired Colonel Ardan Kıratlı, Retired Sergeant Asım Atak ve Retired Sergeant Abdullah Hoşgür were released.

The five retired officers arrested were transferred to the Sincan Prison while the six active officers were taken to the Mamak Military Prison.