Iraqi firefighters put out a fire at the site of a car bomb attack in the Baghdad al-Jadida neighbourhood in this file picture. On Saturday, a rocket fell inside Baghdad's heavily fortified Green Zone, which houses government buildings and foreign missions, while three others landed there on Thursday. Those attacks also caused no casualties.
Washington blames such attacks on Iranian-backed militia groups. Iran has not directly commented on the incidents.
Iraq, often the scene of spillover violence from U.S.-Iran tensions, seeks to avoid being drawn into any regional conflagration.
The Middle East came close to a large conflict in January after a U.S. drone strike killed Iranian General Qassem Soleimani and Iraqi paramilitary chief Abu Mahdi al-Muhandis at Baghdad airport. Iran-aligned militias have sworn to avenge their deaths. (Reporting by Ahmed Aboulenein; Editing by Pravin Char)