Defence Minister Hishammuddin Hussein says he has received intelligence of possible escape plans of militants.
West issues threat to Russia and Syria over continuous bombing of city.
Seven prisoners were beheaded, while six were burned to death, authorities said.
Egyptian air strikes target army positions, weapons storage facility and vehicles in counter-attack.
Defeat for Isis would effectively flush them out of Iraq, officials say.
Commander Omer Huseyin claimed US howitzers have started bombing the northern Iraqi city.
A total of 10 ambulances ferried the dead and injured to hospitals.
Alaa Albakr said his brother started showing signs of radicalisation while he was in Germany as a refugee.
Execution of 58 plotters comes with Iraqi government operation to seize stronghold imminent.
More soldiers were also injured in the attack.
RAF Typhoons,Tornadoes and Reaper drones carried out 1,066 air strikes in Iraq and Syria.
Birmingham man Anas Abdalla, 27, denied preparing for acts of terrorism after meeting members of MI5.
EXCLUSIVE Swiss government tells IBTimes UK about its role in negotiations with Boko Haram.
Chibok abduction not the first Boko Haram mass-kidnapping, but only one to attract international outrage.
Chibok mass-kidnapping in 2014 shone a spotlight on deadly insurgency of Boko Haram in Lake Chad region.
The group says the camp is home to 300 defectors, including many European citizens.
Borno state is epicentre of Boko Haram's insurgency, which has claimed at least 20,000 lives since 2009.
Police raid found explosives ready for use in Syrian refugee's flat.
Russian jets have resumed heavy bombing of rebel-held areas of Aleppo after several days of relative calm.
Gunman Omar Mateen killed 49 people and injured dozens more in and attack on the LGBT nightclub in June 2016.
IS (Daesh) is reported to have rigged five bridges with explosives in Mosul.
The email is one of 2,086 emails released by the whistleblowing outfit WikiLeaks.