(NBC News) U.S.-backed, Kurdish-led fighters captured the last town held by the Islamic State group on Friday, after days of intense battles in the militants’ single remaining enclave in eastern Syria, activists said.

The fall of Hajin is a blow to the extremists. The town was their main stronghold in the last pocket of land they control in eastern Syria, near the Iraqi border. ISIS still holds some villages nearby.

The Kurdish-led Syrian Democratic Forces have been fighting to take Hajin and the surrounding villages in Deir el-Zour province for over three months. In the past weeks, the offensive intensified with the arrival of reinforcements from northern Syria.

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