Damascus: At least 20 civilians were killed on Sunday in Turkish shelling of a border town in Syria, a monitor group reported.

According to the Syrian Observatory for Human Rights, Turkish airstrikes and artillery targeted the town of Bir Kousa near the Turkish borders, Xinhua news agency reported.

The shelling was apparently in retaliation to the Kurdish-led Jarablus Military Council destroying three Turkish tanks earlier in the day.

The campaign marked the first outright military intervention by the Turkish army in the quagmire of the Syrian war.

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