The U.S. nuclear-powered submarine Los Angeles made a brief port call Sunday at Sasebo port here, city officials said.
The Los Angeles, with 130 crew members aboard, stopped at the port in the morning and left about four hours later.
The city officials earlier quoted Foreign Ministry officials as saying that the 6,082-ton sub made the port call to give the crew time to rest and resupply.
The U.S. government is supposed to notify Japan about such port calls at least 24 hours in advance. But the United States decided to stop notifying the public about the port calls due to fears of terrorism after the Sept. 11, 2001, attacks in the U.S.