![US forces and members of the Syrian Democratic Forces (SDF) patrol the Kurdish-held town of Al-Darbasiyah in northeastern Syria bordering Turkey on November 4, 2018 [DELIL SOULEIMAN/AFP/Getty Images]](https://i0.wp.com/www.middleeastmonitor.com/wp-content/uploads/2018/12/GettyImages-1057266324-e1543677521253.jpg?resize=1200%2C800&quality=85&strip=all&zoom=1&ssl=1)
US-backed fighters in Syria have captured a senior Daesh leader who served as an assistant to the group's self-declared "caliph" Abu Bakr al-Baghdadi, they said on Friday.
The Syrian Democratic Forces (SDF), a Kurdish-led militia alliance that holds the quarter of Syria east of the Euphrates, detained Osama al-Awaid last week, it said in a statement.
SDF fighters have been attempting to take Daesh's last Syrian pocket of territory on the banks of the Euphrates near Iraq for weeks, in an offensive backed by US-led air strikes.
They captured Awaid in a special operation in a village in eastern Syria, the statement said, adding that he had been a senior security official for Daesh in the country.
More than a year after Daesh's physical "caliphate" collapsed in both Syria and Iraq under military attack, Baghdadi's whereabouts remains a mystery.
However, despite its loss of territory, the group has been able to launch guerrilla attacks in areas controlled by both the Syrian and Iraqi governments.
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