The cruise ship, Diamond Princess, and the roughly 3,700 people aboard have been under two-week quarantine since arriving back at the port of Yokohama, just south of Tokyo, on Monday after a man who disembarked in Hong Kong was diagnosed with the virus.
Another 41 people quarantined on the cruise liner tested positive for corona virus on Friday, bringing the total confirmed cases to 61, with thousands of passengers confined to cabins as testing continues.
Health Minister Katsunobu Kato told a news conference 21 of the newly found 41 cases were Japanese. Further tests would be conducted if additional passengers on board the ship developed symptoms, he said.
Video footage showed blue and white hoardings put up in the vessel as passengers diagnosed with the virus were being moved out to medical facilities.