BBC, citing sources on the ground, reports that US jets monitored a long convoy carrying Daesh militants and their families, along with weapon-laden trucks leaving Raqqa, after signing a deal with the YPG.
US, Iran, Turkey and Iraq have warned the Kurdistan Regional Government of serious consequences if it proceeds with Monday's independence referendum.
The US-led coalition carried out airstrikes to block a convoy of Daesh militants being evacuated from the Lebanon-Syria border to near Iraqi border.
Turkey rejects Brett McGurk's remarks linking Turkey with Al Qaeda-affiliated groups in Idlib. McGurk was previously criticised by Turkish authorities for his support of the PYD, PKK's Syrian affiliate.
Fighting since late last year has displaced more than 240,000 people in the wider Raqqa province even as some 50,000 people still remain trapped in Daesh-controlled areas, officials say.
The Syrian Observatory for Human Rights says Daesh has fully retaken Al Senaa, which was the most important neighbourhood taken by the Syrian Democratic Forces. But Daesh has withdrawn from the Aleppo province.
Three years after they were ousted from Mosul, Iraqi forces say the battle to retake the city from Daesh has entered its final stages.
US Diplomat Brett McGurk, who is the US envoy in the battle against Daesh, says Turkey remains a crucial ally in the fight against the terror group.
Raqqa is Daesh's self-proclaimed capital in Syria.
The terrorist group is using suicide attacks and booby traps to slow down troops.
Ankara says US must fulfill its commitment to keep PYD and YPG away from the Turkish border instead of viewing Operation Euphrates Shield with skepticism.
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