NEW : `` It 's not a good day for the cartels , '' says ICE director John Morton . NEW : Smugglers were caught in the act , John Morton says . A 600-yard tunnel connected warehouses in U.S. and Tijuana , officials say . 26 tons of smuggled marijuana were found on the U.S. side and 10 in Tijuana .
NEW : `` It 's not a good day for the cartels , '' says ICE director John Morton . NEW : Smugglers were caught in the act , Morton says . A 600-yard tunnel connected warehouses in Tijuana and San Diego , officials say . 26 tons of smuggled marijuana were found on the U.S. side and 4 in Mexico .