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DUBAI, United Arab Emirates (AP) — The U.S. Navy has searched through the night into Monday morning for a sailor who went missing from the aircraft carrier USS Nimitz during its patrol of the northern Arabian Sea amid tensions with Iran.

The crew aboard the Nimitz sounded a “man overboard” alert at 6:47 p.m. on Sunday, after being unable to find the sailor aboard the nuclear-powered aircraft carrier. That was after an extensive search of the Nimitz.

The vessel is America’s oldest carrier in active service that carries some 5,000 sailors and Marines.

The Nimitz, the guided-missile cruiser USS Princeton and other 5th Fleet personnel continued the search on Monday.