Al Mayadeen TV channel said the ammunition warehouse in the Northwest of Tal Afar airport in Western Mosul was apparently used by the terrorist group to store mines, IEDs and other weapons.
There were no immediate reports on possible causes of the incident.
The report came as Iraqi forces say they are progressing steadily in the operations to liberate the ISIL-held city of Mosul from its terrorist occupants.
Iraq’s Popular Mobilization Units liberated two more villages close to Mosul. Some 2,300 families, whom ISIL terrorists were using as human shields, were also freed during the offensives to free al-Buthah and al-Salehiyah villages.
After months of preparation, Iraqi army soldiers, backed by volunteer fighters and Kurdish Peshmerga forces, launched an operation on October 17 to retake Mosul from ISIL terrorists.
Iraqi Prime Minister Haider al-Abadi has vowed that Mosul, Iraq’s second largest city and ISIL’s last urban stronghold in the country, will be fully recaptured by year-end.