The Mu Du Bong was detained after it ran aground off Mexico 's coast in July . North Korea says there 's no reason to hold the ship and accuses Mexico of human rights violations . Mexico says it followed proper protocol because the ship 's owner skirted CNN sanctions .
The Mu Du Bong was detained after it ran aground off Mexico 's coast in July . North Korea says there 's no reason to hold the ship and accuses Mexico of human rights violations . Mexico says it followed proper protocol because the ship 's owner skirted U.N. sanctions .