International coalition aircraft flew over al-Mayadeen, described as the capital of Iran-backed militias, in eastern Syria.
The Syrian Observatory for Human Rights reported on Friday increased air traffic, especially drones, over Mayadeen, al-Ashara town, and Buqrus village in Der Ezzor’s countryside.
Meanwhile, reports stated that four missiles launched from a military site belonging to the Iranian militias near the industrial secondary school in Mayadeen targeted a base of the international coalition within the al-Omar field.
The Observatory added that the Iranian militias mobilized their forces, and four-wheel drive vehicles loaded with heavy machine guns and anti-aircraft weaponry arrived at a military center at the paper mill in Husseiniya, north of Deir Ezzor.
Meanwhile, the US Central Command (Centcom) announced that missiles targeted the international coalition forces in one of its bases in northeastern Syria without causing casualties.
The statement read: "At approximately 9:32 pm local time in Syria, rockets targeted Coalition Forces at the Green Village base in northeast Syria. The attack resulted in no injuries or damage to the base or coalition property."
Centcom indicated that the US forces in northeast Syria are investigating the incident.
Agence France Presse noted that the US leadership did not accuse any party but made it clear that the US forces deployed in the region were investigating the incident.
"Attacks of this kind place coalition forces and the civilian populace at risk and undermine the hard-earned stability and security of Syria and the region," said Joe Buccino, Centcom spokesman.
The area of eastern Syria is an essential route for the Iraqi battalions, the Lebanese Hezbollah, and other pro-Iranian groups. According to AFP, it is used to transfer weapons, fighters, and various goods between Iraq and Syria.
Earlier in November, a convoy of fuel tanks and weapons belonging to Iran-backed fighters was subjected to airstrikes after crossing from Iraq into eastern Syria, killing 14 people, according to the Syrian Observatory.
The coalition denied that any of its forces, including Americans, were responsible for carrying out the raid.
Over the years, trucks carrying weapons and ammunition, warehouses, and military sites of the pro-Tehran groups have been subjected to airstrikes, especially between al-Mayadeen and al-Bukamal.
About 900 American soldiers are still deployed in northeastern Syria and at the al-Tanf base near the Syrian-Jordanian-Iraqi border triangle.
Meanwhile, a Syrian checkpoint intercepted a US military convoy that tried to enter the al-Damkhiya in Qamishli.
Meanwhile, the official Syrian News Agency (SANA) quoted local sources as saying that five US military vehicles tried to enter al-Damkhiya village in Qamishli's countryside.
Members of an army checkpoint intercepted and expelled it outside the area, local sources told SANA on Friday.