Police on Sunday registered a case against unidentified militants, who attacked Bannu Central Jail, on the complaint of the jail superintendent in Station Town Police Station.
Zahid Khan, the jail superintendent, said that hundreds of militants attack the prison at around 1:30am local time with heavy weapons and broke the gates of the prison, resultantly around 400 prisoners, involved.
The attackers were Taliban extremist, Zahid said.
The police said that terrorism and Blasts among 11 clauses had been included in the First Information Report (FIR) (FIR No 41/2012).