Iraqi Kurdish forces say they have retaken five villages east of the Islamic State-held city of Mosul in an operation launched early Sunday.

U.S.-backed Kurdish forces known as peshmerga aim to “clear several more villages” in “one of many shaping operations” that will increase pressure on the extremist group, the Kurdish region’s Security Council said in a statement.

Peshmerga Brig. Gen. Dedewan Khurshid Tofiq described the operation outside Mosul as “ongoing.” Rudaw, a local television network, showed footage of smoke rising from a village in the distance as armored vehicles pushed across a field.

The council’s statement said the area cleared is about 50 square kilometers (20 square miles). It said the U.S.-led coalition is supporting the operation with airstrikes, one of which destroyed a car bomb.