According to news agencies, it was the first major strike against coalition forces in several weeks.
At least five rockets have been fired at a US military base in northeastern Syria, reports the news agency Reuters citing two Iraqi security sources.
According to the news agency, the rockets were fired from the Iraqi city of Zummar on Sunday.
According to their statement, Iraqi security forces launched a major search operation in Nineveh province after the attack.
News agency Reuters according to sources, a vehicle with a rocket launcher attached to it had been found near the border with Syria. The suspects in the attack were said to have fled the scene in another vehicle.
According to a US official, no one was injured in the attack.
It is the first attack against a US military base since the beginning of February, news agencies say.
The organization boss blames the coalition supported by Iran
Director of the Syrian Observatory for Human Rights, which monitors the war in Syria and operates from Britain Rami Abdel Rahman said several rockets were fired from Iraqi territory at a military base in southeastern Syria where US troops are stationed.
Rahman accused the Iraqi Islamic resistance movement of being behind the attack. A loose coalition of Iranian-backed groups has claimed responsibility for most of the attacks against US forces between mid-October and early February.
The group has said that it acts out of solidarity with the Palestinians and anger at the US support for Israel, which is destroying Gaza with airstrikes and ground attacks.
The United States has about 2,500 troops stationed in Iraq and nearly 900 across the border in Syria. It is about the international coalition created in 2014, which fights against the extremist organization ISIS.
Sources: Reuters, STT, AFP