DUBAI, Sept 18 (Reuters) - The United States has closed its embassy in the Yemeni capital Sanaa after an attack on the heavily fortified building, al Jazeera television said on Thursday.

It was unclear from the report whether the closure was temporary or permanent.

Two suicide car bombs set off a series of explosions outside the U.S. embassy in Yemen on Wednesday, killing 16 people including six attackers. No U.S. citizens were hurt.

(Reporting by Raissa Kasolowsky; Editing by Thomas Atkins)

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