A Singaporean man has been sentenced to 15 weeks in jail for obstructing a sanctions investigation into oil transfers to a North Korean ship, court records show, marking a victory in an ongoing case against the U.N.-sanctioned Yuk Tung Energy.

Manfred Low Cheng Jin was serving as one of the company’s directors when he was instructed to destroy an iMac computer that contained incriminating evidence, according to Singaporean court records seen by NK News.

In Jan. 2018, Japan’s Maritime Self-Defense Force photographedthe Yuk Tung, a 36,000-ton Dominican-flagged oil tanker belonging to Yuk Tung Energy, transferring oil to North