(CNN) -- U.S. and British forces were searching Tuesday for a sailor missing from a U.S. ship conducting operations in the Gulf of Oman, the U.S. 5th Fleet said in a statement.
"The sailor did not report to watch" Tuesday aboard the USS Halsey, and "after a search of the ship, man overboard was called."
However, the sailor is a female, a U.S. military official said.
Helicopters and other aircraft were being used in the search for the sailor, who was not identified because of the ongoing search.
The 5th Fleet, based in Manama, Bahrain, did not provide any additional details in the statement.
