Published: Nov 27, 2010 12:23 AM EST
Updated: Nov 26, 2010 9:23 PM EST

SAN DIEGO (AP) - U.S. authorities say more than 20 tons of marijuana was seized in connection with a cross-border tunnel that was equipped with a rail car - the second discovery of a major underground drug passage in San Diego this month.
Mike Unzueta of U.S. Immigration and Customs Enforcement says the passage ran 2,200 feet from a home's kitchen in Tijuana, Mexico, to two warehouses in San Diego.

Unzueta says the tunnel is believed to be the work of Mexico's Sinaloa cartel.

Three people were arrested in the United States and five in Mexico. Authorities seized nearly 14 tons of marijuana at a nearby Border Patrol checkpoint Thursday. Three tons of marijuana were found in a "subterranean room" and elsewhere in the tunnel on the U.S. side, and Mexican officials seized four tons of pot at a ranch in northern Mexico.

(Copyright 2010 by The Associated Press. All Rights Reserved.)