Within the scope of the investigation opened by the Kocaeli Chief Public Prosecutor's Office, it was learned that 4 more people have been taken into custody, including Van Metropolitan Municipality co-mayor Mustafa Avcı, who was detained in Van on 8 June.

Mustafa Avcı and Zehra Güçlü, Dilşa Kocakaya, Gazal Dilek and Tülay Demir have been held in Kocaeli Provincial Police Department for 3 days.

It was noted that the investigation, which is under confidentiality, was opened on the grounds of "being involved in the prison structure".