As far as I know, the prisoners were merely slapped around.Intellectuals such as İlhan Selçuk (allegedly linked with the 9 March coup plans) and Uğur Mumcu were tortured there.
[2][3][4][5] Under duress to write an apologetic statement, Selçuk famously revealed his plight using a modified acrostic which decrypted to "I am under torture".
Another prisoner, outspoken liberal Murat Belge, says that he was tortured there by Veli Küçük, who later founded JITEM and Hezbollah (Turkey) to counter the Kurdistan Workers' Party.
[6] Küçük says he could not be responsible since he was stationed in Şırnak and has been charged with colluding with another Ziverbey victim, İlhan Selçuk (see Ergenekon).
[8] General Yamak denied that the Special Warfare Department (ÖHD) was involved, and dismissed any notion of a "counter-guerrilla".