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 .
NEW : Authorities describe a `` very sophisticated '' drug smuggling tunnel . NEW : The tunnel was between a Tijuana eat-in kitchen and two San Diego warehouses . NEW : Two people have been arrested in the United States , and at least seven in Mexico . The tunnel is in the same area where agents found another this month .