Mitsui O.S.K. Lines Ltd. paid a deposit of about ?4 billion to secure the release of an ore carrier seized in China, sources said Thursday.

The ship was seized Saturday based on a Shanghai court ruling involving a dispute over compensation from a contract predating World War II.

The court¡¯s move has renewed fears in Japan that the assets of other Japanese companies operating in China might be confiscated on the basis of wartime rulings in favor of Chinese plaintiffs.