USA : Agents describe a ` ` very sophisticated '' drug smuggling tunnel . NEW : The tunnel was between a Mexican eat - in restaurant and two San Diego warehouses . NEW Earlier this month , agents made several arrests after seizing about 30 tons of marijuana related to the other San Diego tunnel discovery . : 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 .
USA : Agents describe a ` ` very sophisticated '' drug smuggling tunnel . NEW : The tunnel was between a Mexican eat - in restaurant 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 .