A missile attack targeted a US air base in the Conoco gas field in Syria's Deir Ezzor province, state media said on Tuesday.
A Pentagon official told Al Jazeera that the current assessment is that the attack on a coalition base in Syria did not result in any casualties.
For its part, Reuters quoted two American officials as saying that the shells fired towards an American air base in a gas field in the Syrian province of Deir ez-Zor did not hit the facility.
Earlier, a security source told Reuters that Iranian-backed armed groups targeted the base with six shells, all of which fell in the vicinity of the US base, adding that the US-led coalition responded to the attack with artillery.
The American official explained to the agency – who requested anonymity – that the shells did not hit the base and there were no casualties. The official cited initial reports that could change.
The agency quoted local media as saying that US warplanes flew intensively in the skies of Deir Ezzor countryside following the attack.
In the same context, ConocoPhillips said it was aware of reports of damage to a US and coalition base in eastern Syria named after Conoco.
previous attack
Earlier, the US Department of Defense said on Tuesday that eight American soldiers were injured in a drone attack on a base in Syria last week.
This is the first time the ministry has mentioned the number of people injured in the accident.
Pentagon spokesman Patrick Ryder told reporters Tuesday that three soldiers had already returned to duty, and the eight soldiers were being treated for brain injuries and smoke inhalation.
Ryder added that the United States believes that the attack was carried out by Iranian-backed forces, noting that the Pentagon is working to identify these forces.
The United States says it has 900 troops in Syria and 2,500 in Iraq.