A Katyusha rocket landed in Baghdad's heavily fortified Green Zone near the US embassy.

Iran Press/Middle East: The attack caused damage to an empty building and there were no casualties, according to Iraqi security sources on Sunday.

Sirens blasted inside the U.S. Embassy and helicopters were hovering above as the rocket hit the heavily-fortified area.

It was the second such attack in recent days after three rockets landed in the Green Zone on Thursday as well. However, none of the attacks caused casualties.

The US embassy in Baghdad and US terrorist bases in Iraq, including al-Taji and al-Balad bases, have been targeted by rockets several times in recent months.

Many Iraqi people and groups call for the withdrawal of American terrorist forces from Iraq, and the Iraqi parliament has approved a plan for the withdrawal of these forces.

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