Another ship suspected of having carried North Korean coal to South Korea was nonetheless permitted to dock at Pyeongtaek port again recently and only left last week.

The Korea Customs Service reportedly searched the ship but found nothing suspicious.

The Belize-registered Shining Rich docked in Pyeongtaek on Thursday afternoon and sailed for Tianjin on Saturday afternoon, according to ship tracker Marine Traffic on Sunday.

The vessel was one of five foreign ships on customs authorities' list of investigation targets on suspicion of having carried North Korean coal banned by UN Security Council resolutions.

