Damascus
The targeted base targeted on Monday evening is located in the al-Omar oil field in the eastern countryside of Deir al-Zour, Xinhua news agency quoted the state media report as saying, without providing further details.
Meanwhile, the UK-based Syrian Observatory for Human Rights watchdog group said the attack caused damage and burned cars in the base, without any mention of casualties.
The war monitor noted that pro-Iran fighters were behind the rocket fire.
Following the attack, areas under the control of the pro-Iranian fighters in the al-Mayadin city in Deir al-Zour witnessed several explosions, which appeared to be retaliatory shelling from the targeted US base in the al-Omar field, said the Observatory.
The exchange of fire comes after the United States carried out a missile strike at 1 a.m. on Monday on pro-Iranian fighters' positions in the eastern countryside of Deir al-Zour near the Iraqi border, killing five.
Washington claims that pro-Iran militiamen are responsible for attacks against US positions in Iraq.
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