Gunmen battled Pakistani security forces for control of a major prison holding hundreds of militants on Monday night, police said.
The gunmen launched their attack with a series of heavy explosions before firing rocket propelled grenades and machine guns, district police chief Sohail Khalid said.
The prison, in the central town of Dera Ismail Khan, houses Taliban and militants from banned sectarian groups.
More top news
Scotland finally injected some momentum into their World Cup preparations as they beat Italy 48-7 triumph at Murrayfield.
Labour leadership candidate says Britain playing its role in the migrant crisis would help Cameron secure the promised reforms in Brussels.
Ten people have been taken to hospital and another two treated for injuries after a bus crashed into a tree in east London.