The militants were killed because their allegiance to the group was questionable, Ghabban said, Anadolu Agency reported.
The terrorist group called “Islamic State of Iraq and the Levant” recently executed 100 of its members for questionable allegiance, Iraq's interior minister said Sunday.
The minister also praised the achievements of the Iraqi security forces and volunteers fighting against ISIL, and said that all areas that are controlled by the group would be recaptured.
"The province of Salahudin, which is mostly controlled by ISIL, will be recaptured within the next few days," Ghabban said.
This will also help retake Mosul through a larger operation, he added.
In June 2014, ISIL stormed the northern province of Mosul and declared what it called a "caliphate" in Iraq and Syria.
The Iraqi army, along with volunteer forces, Kurdish Peshmerga forces and armed tribesmen has carried out numerous airstrikes against ISIL in Iraq and Syria.