Turkey's military returned fire on Daesh positions in northern Syria on Thursday, killing 11 members of the militant group, military sources said.

The military returned fire after its artillery near the border town of Karkamış was hit by mortars, the sources said. Seven militants firing mortars were killed and four more were killed in a vehicle, the sources said.

Karkamış is just across the border from the Daesh-controlled Syrian town of Jarablus. It is also about 100 km (62 miles) east of the Turkish border town of Kilis, which has been frequently hit by rocket fire from Daesh-controlled Syrian territory in recent months, killing civilians.

Turkey has repeatedly fired back at Daesh positions from its border with Syria, but has said it needs greater support from Western allies, citing the difficulty of hitting moving targets with howitzers.

Foreign Minister Mevlüt Çavuşoğlu was quoted as saying this week that the United States would deploy a rocket launcher system near the stretch of border that has come under attack.

A senior U.S. military official has confirmed the matter was under discussion but declined to comment further.

In the latest attack on Kilis, one person was killed and 26 injured when rockets pounded the town on Sunday.Kilis, which lies six kilometers (four miles) from the Syrian border, has been hit by several rockets fired from Syria since mid-January. On April 18, four rockets fired from across the border killed five people and injured six in the province.

To date, a total of 18 people including 10 Turkish nationals were killed and 60 others wounded in the attacks.