( CNN ) -- The Colombian military says it has seized a submarine capable of transporting more than seven tons of cocaine from Colombia to Mexico . This is the most sophisticated tool ever found to traffic drugs from Colombia , local media reported . In a short news release , the Colombian military said that the submarine was ready to be loaded with drugs when found in Timbiqui , Cauca , a small town in the Pacific Coast . According to the local authorities , the submarine is 31 meters ( 102 feet ) long and capable of submerging to a depth of 9 meters ( about 30 feet ) making it very difficult to locate . This is the first time such a vessel for this purpose has been found in the country . Mexican authorities seized a similar submarine in 2008 . Then , experts said the technology used to build it was of Russian origin .
Military : Vessel was capable of transporting more than 7 tons of cocaine . 31-meter-long sub could submerge to a depth of 9 meters , authorities say . Similar vessel was seized in Mexico in 2008 .