Several people were wounded Sunday night when six Katyusha rockets were fired at Baghdad's Green Zone, three hitting the area housing government buildings and foreign missions, the Iraqi military said.
The three other rockets fell in the nearby Jadriya area, the military's statement said.
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The latest local media reports said six people were wounded in the attacks.
According to French news agency AFP, the attack – the second in so many nights – came just hours after the ambassador was summoned over the US strike that killed Iranian strongman Qassem Soleimani on Friday.
Iran has since vowed to avenge Soleimani's death, with its ambassador to the United Nations letting the Security Council know that Iran reserves the right to self-defense under international law.
Earlier on Sunday, in response to Soleimani's killing, Iraq's parliament supported a recommendation by the prime minister that all foreign troops, including American troops, be ordered out of the country.