The US cited a ship already under UN port ban and its husband and wife owners for allegedly sneaking petroleum into North Korea.

The 6,031-dwt Shang Yuan Bao (built 1982) is accused of having twice sailed into international waters to transfer a total of 1.7 million liters of petroleum product to the North Korea-flagged 2,250-dwt Paek Ma (built 1993) and 817-dwt Myong Ryu 1 (built 2012) last year.