A U.S. sailor went overboard Wednesday from the aircraft carrier USS Abraham Lincoln, prompting a search operation in the Arabian Sea, according to the Fifth Fleet.

The statement Thursday said two U.S. ships, a Spanish frigate and a Pakistani naval ship, are conducting a search-and-rescue operation.

IRAN ADMITS SEIZURE OF FOREIGN TANKER, 12 CREW MEMBERS IN STRAIT OF HORMUZ; US WARSHIP ENTERS PERSIAN GULF

The sailor, whose name was withheld in line with navy policy, has been missing since Wednesday.

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The Abraham Lincoln was routed to the Arabian Sea in recent weeks in what U.S. officials say is a deterrence amid heightened tensions between the U.S. and Iran.