Submarine could have hauled 6 to 10 metric tons of cocaine , DEA says . The $ 4 million vessel was built at a clandestine complex . Sub is first of its kind found by drug agents , DEA says . Comment:
Submarine could have hauled 6 to 10 metric tons of cocaine , DEA says . The $ 4 million vessel was built at a clandestine complex . Sub is first of its kind found by drug agents , DEA says . It is diesel-electric powered , the drug agency said .