A drug-smuggling tunnel equipped with electricity, ventilation and a rail system has been found connecting San Diego, California, and Tijuana, Mexico. Authorities seized more than eight tons of marijuana and 325lb (147kg) of cocaine in the discovery.
US Immigration and Customs Enforcement (ICE) announced the find on Thursday.
It was described as "a just completed, highly sophisticated underground passageway", according to an ICE statement.
The tunnel is the eighth discovered just in San Diego since 2006, according to media reports.
In 2010, officials confiscated 22 tons of drugs from a 640m (2,100ft) tunnel equipped with rail tracks stretching from a Tijuana home to two San Diego warehouses.