Border police in the United States and Mexico have found a drug smugglers' tunnel linking the Mexican city of Tijuana with California.
It is close to where police found a tunnel earlier this month, equipped with rails, ventilation and lights.
Police are still investigating, but local media are speculating the new tunnel, almost 800m (2,600ft) long, could be even be more sophisticated.
The authorities say it was used for smuggling marijuana into the US. BBC News