"A sum of 590 ISIL militants have been killed in November," Al-Akhbariya news agency quoted a senior Iraqi military official as saying.The source noted that 167 of the slain ISIL terrorists had joined the fight from abroad as they bore non-Iraqi nationalities.

"An international team is studying the DNA of the bodies of 380 ISIL militants who have been killed in clashes with Iraqi security forces," he added.

The ISIL terrorists were killed in clashes with the Iraqi security forces in Al-Anbar and Salahuddin provinces and they were from 26 European and Asian countries.

The ISIL Takfiri terrorists currently control parts of Syria and Iraq. They have threatened all communities, including Shiites, Sunnis, Kurds, Christians, Ezadi Kurds and others, as they continue their atrocities in Iraq.

But ISIL terrorist group lost around half of the territories it occupied since June 10, 2014, after the successive military achievements of the Iraqi army in its counter combat against the terrorist group.

In Salahuddin, the Iraqi army regained control over Baiji and its oil refinery as well as several other towns; whereas, Tikrit and other towns kept under ISIL control, Al-Manar reported.

ISIL also still controls Fallujah and a large part of Ramadi in the province of Anbar.In a related context, ISIL leader in Heet was killed in an airstrike.

Iraqi security sources said that the army as well as the peshmerga and the volunteer forces regained control over several towns Western Diyala as ISIL terrorists escaped from them.

The sources added that defenses of the terrorists collapsed as the army has been shelling their last besieged sites.

Senior Iraqi officials have blamed Saudi Arabia, Qatar, and some Persian Gulf Arab states for the growing terrorism in their country.

The ISIL has links with Saudi intelligence and is believed to be indirectly supported by the Israeli regime.