The Latest: Vietnam says Chinese vessels sank a fishing boat

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The Latest on an international tribunal's ruling on the case filed by the Philippines against China's claims in the South China Sea (all times local):

4 p.m.

Vietnam has accused Chinese vessels of sinking a Vietnamese fishing boat in disputed waters as an international tribunal was to rule Tuesday on the case brought by the Philippines that challenges Beijing's claim of most of the South China Sea.

Nguyen Thanh Hung, a local fisheries executive in central province of Quang Ngai said two Chinese vessels chased and sank the Vietnamese fishing boat as it was fishing near the Paracel Islands on Saturday. The fishermen were rescued by a fellow fishing trawler some seven hours later.

The Permanent Court of Arbitration in The Hague was scheduled to issue its ruling later Tuesday.