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.”
There was no indication of threatening behavior, and no communications exchanged between the two craft, he said, but American anti-submarine aircraft monitored the Chinese vessel.
Chinese officials have not yet commented on the matter.
Separately, U.S. Secretary of Defense Ashton Carter was on board the USS Theodore Roosevelt Thursday as the carrier traveled through the South China Sea, according to the Pentagon.