US forces carried out a "large airborne operation" near Deir Ezzor in eastern Syria on Monday at dawn, Syrian state news agency SANA said.
The American forces landed in the town of Busayra, east of Deir Ezzor, and "kidnapped a number of civilians", it said.
There was no independent confirmation of the report.
The province of Deir Ezzor, along the Iraqi border, is a strategic supply route for Iranian-backed militias who regularly send reinforcements into Syria to support President Bashar al-Assad.
US forces are deployed at a base in al-Tanf region, south of Deir Ezzor, as part of combat mission against ISIS militants who continue to wage a low-level insurgency in Iraq and Syria.
