In the investigation into the 2011 death of Kaşif Kozinoğlu at Silivri Prison, retired officials Hasan Ataman Yıldırım and Hasan Atilla Uğur were placed under house arrest on charges of "intentional killing," while then-Silivri Chief Public Prosecutor Ali İşgören and prison prosecutor Necip Doğan were referred to a magistrate's court with a request for arrest on charges of "membership in a criminal organization."
House arrest was requested for Yıldırım and Uğur due to their age and health conditions. Arrest was requested for former chief prosecutor İşgören and former prosecutor Doğan, who were dismissed from FETÖ. Uğur, who was also tried in the Kızıltepe JİTEM case, had been detained at the airport upon his return from Cyprus.