Iran Press/Middle East: The attack took place before midnight, a source from the Iraqi Interior Ministry said on condition of anonymity.
There were no immediate reports about casualties, but sirens were heard in the zone, the source said.
No group has so far claimed responsibility for the attack.
The attack came as the Iraqi officials are preparing for a round of strategic dialogue with the US side on Thursday to discuss the relations between Baghdad and Washington as well as the future of the US forces in Iraq.
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