Iranian Militias in Iraq and Syria (IMIS) fled Sinjar district in Nineveh Governorate after fleeing Khanaqin city on Diyala Governorate on Thursday.
On Wednesday, it was reported that Peshmerga forces liberated Khanaqin, forcing Iran-allied IMIS militias to flee the city.
This comes as the crisis in Kirkuk has escalated. Peshmerga forces have been fending off attacks launched by the Iraqi forces, backed by IMIS, since Sunday night.
Tensions between the two sides over the future of Kurdistan have been high since the Kurds voted for independence in a September referendum.
The oil-rich Kirkuk Governorate has emerged as a flashpoint in the crisis as it is claimed by both sides.