The U.S. military conducted a strike on another boat accused of carrying narcotics on board, killing three people, U.S. Southern Command announced Sunday. It was the 21st such strike reported in recent weeks.

The attack on Saturday targeted a vessel operated by "a Designated Terrorist Organization" in the Eastern Pacific in international waters, authorities said. SOUTHCOM did not disclose the organization or where the vessel was traveling from.

In a video posted to social media, SOUTHCOM said the vessel was carrying narcotics and transiting along a known drug-trafficking route.

The latest strike comes amid a major U.S. military buildup in the region. On Sunday, the nuclear-powered aircraft carrier USS Gerald R. Ford and its carrier strike group arrived in the Caribbean Sea . S

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