An oil tanker seized by Seoul for its role in smuggling oil to North Korea left South Korean waters in early August, following its release last month.

According to the NK Pro ship tracker, the 16,500-tonne Lighthouse Winmore tanker left South Korea’s Gwangyang Port on August 1 and headed directly to an island near Shanghai.

The Hong Kong-flagged tanker was detained by the South Korean authorities at the end of 2017, though, according to a report from Reuters, was given the green light to leave South Korean waters in July.

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