A US military attack on a ship allegedly carrying drugs from Venezuela left two survivors who have reportedly been captured by US forces and are being held aboard a Navy ship. The attack, which took place on Thursday, is at least the sixth US strike on Venezuelan ships in recent weeks. It was the first time that survivors have been reported.

In a stunning revelation, President Donald Trump confirmed that the U.S. military destroyed a drug-smuggling submarine in the Caribbean, allegedly linked to cartels operating from Venezuela. Trump said the sub was “built to transport massive amounts of drugs” and dismissed claims it carried innocent civilians.

The newest sub in service of the Royal Navy is part of the Astute class of fast attack submarines. Fast attack submarines, like the HMS Agamemnon, are designed to wreak havoc on enemy shipping during wartime, as well as provide key intelligence to military commanders and policymakers.

President Donald Trump said the two survivors of a US attack on a submarine he claimed was carrying illegal drugs in the Caribbean will be returned to their home countries.