Prosecutors in Taiwan have accused four men of involvement in shipping coal from North Korea to Vietnam last year, in violation of United Nations sanctions.
The Taipei District Prosecutors' Office said a man surnamed Chiang and his son chartered a ship via a Chinese intermediary to transport the coal in August or September 2017.
The investigation, which involved around 70 officers, found Mr Chiang, his son and two other men had falsified navigation logs and switched off their vessel’s global positioning system to avoid detection before offloading the coal in waters near Vietnam. The four men, who are accused of forging documents and breaching laws on financing terrorism, have not been formally charged.