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Black smoke rises from the Japanese cruise ship Asuka II docked in Yokohama Port, near Tokyo, Tuesday, June 16, 2020. The local branch of Japan Coast Guard said smoke started on the top floor of the one of Japan's largest cruise ship where dozens of firefighters were battling to extinguish it. The coast guard said there were no reports of injuries. (AP Photo/Koji Sasahara)

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Smoke rises from Japanese cruise ship Asuka II docked in Yokohama Port, in Yokohama near Tokyo Tuesday, June 16, 2020. Massive black smoke broke out on Tuesday from the Japanese cruise ship docked in Yokohama, where dozens of firefighters and coast guard members battled to take control of it. The local branch of Japan Coast Guard said smoke started on the top floor of the cruise ship. (AP Photo/Koji Sasahara)

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Smoke rises from the Japanese cruise ship Asuka II docked in Yokohama Port, near Tokyo, Tuesday, June 16, 2020. The local branch of Japan Coast Guard said smoke started on the top floor of the one of Japan's largest cruise ship where dozens of firefighters were battling to extinguish it. The coast guard said there were no reports of injuries. (Kyodo News via AP)

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Firefighters battle as black smoke rises from the Japanese cruise ship Asuka II docked in Yokohama Port, near Tokyo, Tuesday, June 16, 2020. The local branch of Japan Coast Guard said smoke started on the top floor of the one of Japan's largest cruise ship where dozens of firefighters were battling to extinguish it. The coast guard said there were no reports of injuries. (AP Photo/Koji Sasahara)

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Black smoke billowing from cruise ship docked near Tokyo

By Associated Press Tokyo

PUBLISHED 6:35 AM ET Jun. 16, 2020

TOKYO (AP) — A fire broke out on a cruise ship docked at a port near Tokyo on Tuesday, with crew members and dozens of firefighters and coast guard personnel taking hours to extinguish it.

The cause of the fire was not immediately known, and the coast guard reported no injuries. No passengers were aboard.

The fire was extinguished after about three hours, coast guard officials said.

The local coast guard branch said the fire started in a storage area on the top deck of the Asuka II, one of Japan's largest cruise ships.

The operator NYK Line said 153 crew members were on board for essential duty and helped fight the fire.

The cruise ship has been docked in Yokohama Port, west of Tokyo, since early April after returning from Singapore, where it had undergone maintenance.