NEW : Authorities describe a `` very sophisticated '' drug smuggling tunnel . NEW : The tunnel was between a Tijuana eat-in kitchen and two the United States warehouses . NEW Although that truck did n't carry any drugs , the residence it went to had $ 13,500 in cash . : two people have been arrested in Tijuana , and Two in the United States . The tunnel is in the same area where agents found another this month .
NEW : Authorities describe a `` very sophisticated '' drug smuggling tunnel . NEW : The tunnel was between a Tijuana eat-in kitchen and two the United States warehouses . NEW : two people have been arrested in Tijuana , and Two in the United States . The tunnel is in the same area where agents found another this month .