A huge drugs tunnel has been found running from Tijuana in Mexico to a warehouse in San Diego in the US. With a length of 1,744ft (531m), the passage had a rail track, electricity and a ventilation system. US authorities had been carrying out surveillance at a property previously used as a stash house for smuggling cocaine when they made the discovery. They seized cocaine, methamphetamine and heroin. Six people are being held on drug-trafficking charges. The US Attorney’s Office for the Southern District of California said the tunnel was 61ft (18m) deep and 4ft (1m) in diameter. Prosecutors say that before the discovery, officers saw several vehicles come and go from the property in Tijuana and the warehouse on Friday 13 May. They were then stopped and searched, the drugs were seized and arrests were made. When officers entered the warehouse, the cross-border tunnel exit point was found carved out of the floor.(BBC)…[+]