Islamic state militants staged Iraq prison break - officials

"ISIS was responsible for the killings and the release of ISIS prisoners," said Oudi Al-Khadran, mayor of the town where the prison, which holds hundreds of people convicted of acts of terrorism, is located.

That account was confirmed by Colonel Ahmed al-Timimi of the Diyala province security operations centre. (Reporting by Baghdad newsroom; Writing by Michael Georgy; Editing by Andrew Roche)