Authorities say the drugs had a street value of nearly $ 1 million . Police describe the underground tunnel as a ` ` super tunnel '' Authorities say three people were detained after the cocaine was found . U.S. prosecutor : Word of the detentions comes a day after investigators shut down what they described as the newly completed and `` highly sophisticated '' tunnel , which connected a warehouse in Mexico with another warehouse in a California industrial park . The tunnel was built by Mexico 's Sinaloa cartel .
Authorities say the drugs had a street value of nearly $ 1 million . Police describe the underground tunnel as a ` ` super tunnel '' Authorities say three people were detained after the cocaine was found . U.S. prosecutor : The tunnel was built by Mexico 's Sinaloa cartel .