`` Sophisticated drug smuggling tunnel '' runs from an ice plant in Arizona , the Interior Border Patrol says . Mexico police traced 55 feet of methamphetamine in a truck to the tunnel , agents say . Three unnamed suspects have been arrested in connection with the tunnel , the DEA said . 20 unnamed suspects are in custody .
`` Sophisticated drug smuggling tunnel '' runs from an ice plant in Arizona , the Interior Border Patrol says . Mexico police traced 55 feet of methamphetamine in a truck to the tunnel , agents say . 20 unnamed suspects are in custody .