The Omani government said it had evacuated an Australian from Yemen on Wednesday following negotiations through tribal mediators.
The foreign ministry did not name the man and it was not immediately clear if he was Craig McAllister, who was abducted in the rebel-held Yemeni capital Sanaa in September.
The ministry said only that it had acted at the request of the Australian authorities. 
Oman is the only Gulf Arab state that is not part of a Saudi-led coalition that has been battling the Yemeni rebels since March 2015 and it has mediated the release of several Westerners, including an American in November.
McAllister appeared in a 12-second video in January urging his government to meet the demands of his unidentified kidnappers. 
In a similar video released in October he said he had been working in Yemen as a football coach and that his captors were seeking money.
Dozens of foreigners have been taken hostage in Yemen over the past two decades, mostly by tribesmen as bargaining chips to secure concessions from the government. Almost all have been freed unharmed.
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