Syria's official news agency SANA announced late on Tuesday that several rockets had targeted a US military base near the Conoco oil field controlled by American troops and Kurdish militants in the eastern Syrian province of Dayr al-Zawr.
There was no immediate report on the possible casualties.
This comes a day after a US air raid on a Syrian military checkpoint in the northeastern city of Qamishli killed a soldier and injured two others.
Since late October 2019, the United States has been redeploying troops to the oil fields controlled by its Kurdish mercenaries in eastern Syria, in a reversal of President Donald Trump’s earlier order to withdraw all troops there.
The Syrian government views the US military presence as an illegal occupation of the country aimed at plundering its natural resources.