A ship sanctioned by both the UN and U.S. sailed through South Korean and later Japanese waters over the course of the last 12 days, the NK News vessel tracker and data from Marine Traffic show.

The 2300 ton Orion Star appeared on ship tracking systems at close to midnight on November 17, near South Korea’s Ulsan port and only a few kilometers from the country’s shore.

Maritime police agencies from Busan and Ulsan said they could not see the ship’s passage near South Korea on their tracking systems, and the Ministry of Unification