WASHINGTON - The Iraqi government delivered a planeload of ammunition to Arbil, the capital of Iraq's semiautonomous Kurdish region, on Friday in an unprecedented act of military cooperation between Kurdish and Iraqi forces, a US official said.

The official, speaking on condition of anonymity, said Iraqi security forces, under the command of Prime Minister Nuri al-Maliki, a Shi'ite Arab, delivered the mostly small-arms ammunition in a C-130 cargo plane to resupply the Kurdish Peshmerga forces as they fight militants from the Islamic State.

The Obama administration is working with the Iraqi government to ensure that additional requests from the Kurdistan Regional Government, including mortars and AK-47s, are met "as quickly as possible," the official said.

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