US soldiers patrol an area near Syria's northeastern Semalka border crossing with Iraq's Kurdish autonomous territory, on Nov 1, 2021. (PHOTO / AFP)

DAMASCUS -- US airstrikes hit truckloads of construction materials on the Syrian-Iraqi border early Monday, followed by retaliatory shelling on a US military base in Syria's eastern province of Deir al-Zour, media reports said.

According to the Lebanese al-Mayadeen TV, seven trucks transporting construction materials were targeted by US bombings in eastern Syria, near the border with Iraq.

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In response, 15 rockets were fired, likely by pro-Iran fighters operating in the area, targeting a US base in the al-Omar oil field in the outskirts of Deir al-Zour, said the report.

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Meanwhile, there were reports of explosions at a US base in Syria's northeastern Hasakah province on Sunday night.