One crew member of the Italian cruise ship Costa Atranchica has tested positive for coronavirus, the mayor of Nagasaki, Tomihisa Tagami, said at a news conference on Monday.

The Costa Atranchica cruise ship, which is anchored at Nagasaki Port, has a total of 623 crew members who are foreign nationals. All crew members are now onboard the ship.

Health checks will be carried out on at least 53 people who may have had close contact with the crew member who tested positive, according to Tagami.

On March 13, Nagasaki Gov. Hoso Nakamura said the government requested that the crew refrain from disembarkation due to the spread of infection in Japan.

Local authorities did not provide any details on the crew members and their nationalities.