Washington (CNN)An American aircraft carrier was closely tracked by a Chinese submarine off the coast of Japan last month, a U.S. defense official said, in the latest example of the test of wills between the two countries in the waters of the Pacific.
A submerged Chinese Kilo-class fast-attack submarine shadowed the USS Ronald Reagan for at least half a day on October 24, the official said.
He did not say how close the two vessels came to each other, but he noted, "It was more than a brief encounter."
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