Sharfan Darwish, spokesman for the Manbij Military Council of the US-backed Syrian Democratic Forces (SDF), has said that a US military base was set up in Manbij about three months ago following Turkey's threats to advance on this northern Syrian region.
"After the Turkish attack on Afrin and the increase in Turkish threats towards Manbij, coalition forces built the base to monitor and protect the border [between the combatants]," Darwish was quoted by Reuters as saying.
The remarks came after Free Syrian Army commander Ahmed Osman confirmed to Sputnik that Turkish and US officials are in intense talks over the fate of Manbij.
Earlier this week, Iran's Fars news agency reported that a military convoy departed from a US military base located in the Syrian city of Kobani and set course for Manbij.
The convoy, which included 10 Humvees, "three trucks carrying short-range missiles" and "two vehicles equipped with advanced radar and communication systems," was accompanied by an unspecified number of personnel, according to Fars.
According to Turkey's Anadolu news agency, the US has already established two bases in the Manbij region and deployed some 300 soldiers in the area.
Earlier in April, Rezan Gilo, joint chief of defense in Syrian Kurdistan (Rojava), told Sputnik that the US-led coalition is building new bases in northern Syria, including Manbij, which he said is part of the coalition's cooperation with the SDF.
On March 28, the Turkish National Security Council warned that Ankara would push its operation in the northern district of Afrin further to Manbij, if the Kurdish People's Protection Units (YPG) forces supported by the United States did not leave the region.
Turkey aims to gain control of Manbij as part of its Operation Olive Branch, which kicked off on January 20, 2018.
In separate development in April, US Secretary of Defense James Mattis declared that the US military would not withdraw its forces from Syria, but would expand operations there and "bring in more regional support."
The US-led coalition has been launching air strikes on Syrian soil since 2014, in an anti-Daesh* mission that was approved neither by the Syrian government nor the UN. Right now, an estimated 2,000 US troops are deployed in this Arab country.
*Daesh (ISIL/ISIS/Islamic State), a terrorist group banned in Russia