Submarine being held near Ecuador-Colombia border . Authorities : Vessel was built to `` facilitate trans-oceanic drug trafficking '' and is now used for smuggling cocaine into the United States from South America. Agents seized sub before its maiden voyage .
Submarine being held near Ecuador-Colombia border . Authorities : Vessel was built to `` facilitate trans-oceanic drug trafficking '' Sub is about 30 meters long , has periscope and air conditioning . Agents seized sub before its maiden voyage .