A Patriot battery system was able to respond to the rocket but was unable to intercept it far enough and therefore fell within the Green Zone, local media outlet reported citing its own security source.
"The missile that was intercepted by the American embassy in Baghdad fell near a number of protesters close to the Green Zone area. It landed close to the bridge leading to the Green Zone itself," the message reads.
There was no immediate claim of responsibility as of Sunday morning.
Recent attacks on the Green Zone follow more than two dozen similar attacks against American interests in Iraq since October that the US has blamed on Iran-backed factions among Iraq’s security forces.
Earlier air strikes hit the positions of pro-Iranian Shia militia in Iraq on Thursday, March 12. The missiles reportedly destroyed five weapon storage sites. BBC reported that, with the reference to the Pentagon.
"The Iranian proxy group Kataib Hezbollah is the only group known to have previously conducted an indirect fire attack of this scale against US and coalition forces in Iraq," Central Command chief Gen Kenneth McKenzie said as quoted, reporting to the U.S. Senate Committee.
The U.S. authority confirmed that the airstrikes were deployed with the use of a drone.
"The United States will not tolerate attacks against our people, our interests, or our allies. We will take any action necessary to protect our forces," US Defense Secretary Mark Esper said as quoted by BBC.
The American side blamed the pro-Iranian militants for previous attacks on the military bases in Iraq.