Russian forces bombed US-backed forces in Syria's eastern province of Deir Ezzor early Saturday, the US-led coalition said after Moscow denied the claim.

"At approximately 12:30 am GMT (3:30 am local time) September 16, Russian forces struck a target east of the Euphrates River in Syria near Deir Ezzor, causing injuries to coalition partner forces," the coalition said in a statement.

"Russian munitions impacted a location known to the Russians to contain Syrian Democratic Forces and coalition advisors. Several SDF fighters were wounded and received medical care as a result of the strike."

The statement added that no coalition troops were wounded.