<p>SAN JUAN, Puerto Rico — Three men were indicted Monday in a case that federal authorities say involves some $75 million worth of cocaine found aboard a semi-submersible vessel, the first time such an apparatus has been seized in Puerto Rico.</p>
<p>The U.S. Attorney’s Office said the suspects were transporting about 5,500 pounds (2,500 kilograms) of cocaine aboard the vessel that was intercepted nearly three weeks ago.</p>
<p>The drug and vessel seizure occurred near the southeast coastal town of Yabucoa.</p>
