The undertrials allegedly manhandled prison staff and officials. A guard sustained eye injury while other staff also received minor injuries.
Ibrahim Yazdani, Iliyas Yazdani and Ataullah Rahman, who were arrested last year for being alleged sympathisers of terror group ISIS, attacked the prison staff when their relatives had come to meet them.
According to Director General of Prisons, they used foul language, pushed the warder and entered the main gate area by force.
On a complaint by the jail superintendent, a case was registered against the accused at Dabeerpura police station.