A ship sanctioned by the U.S. was allowed to call in at a South Korean port, where it remained for two days before setting sail for China, the NK News ship tracker shows.

The Belize flagged cargo ship arrived in Ulsan port on May 26 and set sail three days later, data from Marine Traffic shows.

The Jin Teng was originally part of the 31 ships designated by the UN in March as part of Resolution 2270. The ship was arrested in the Philippines following the resolution’s passage, only to be later delisted and released under pressure from Beijing.

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