The US has sanctioned a Singaporean shipowner already wanted by the Federal Bureau of Investigation over his dealings with North Korea.

The US Treasury Department announced on Friday sanctions against Kwek Kee Seng, his Taiwanese business associate Chen Shih Huan, Marshall Islands-registered New Eastern Shipping and two other companies.

Kwek is accused of using the 3,912-dwt Courageous (built 1987) — seized by the US government last year — to deliver petroleum products to North Korea.