Explosion rocks US-Yemeni military base

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An Al Qaeda affiliate in Yemen says it targeted a U.S.-Yemeni air base with rockets in retaliation for a U.S. raid on the group's hideout to free an American hostage.

Witnesses say a powerful explosion rocked the Al-Annad base early Thursday in the southern province of Lahj.

Ambulance rushed to the site and witnesses say they saw bodies taken to nearby hospital.

The Al Qaeda affiliate claimed on its official Twitter account that its militants fired six grad missiles at the base. In a brief statement, the group says it hit the "American section" of the base.

It was not immediately clear whether any American facility inside the base was hit and no official confirmation was available.

The al-Annad base is where American and European military advisers help Yemen battle the country's local Al Qaeda branch through drone strikes and logistical support.