In their announcement, authorities described the elaborate passage smugglers had carved under the border: 
 
 The first tunnel was approximately 600 yards long, secured with wooden trusses and equipped with lighting and a crude rail system. On Thursday, they found a second tunnel, which is one longer and more sophisticated than the first. It’s described as stretching more than 700 yards and more sophisticated, with an electric rail system and ventilation equipment. (Photo: Immigration and Customs Enforcement (ICE) via AP) 
 
 Two more suspected drug-smuggling tunnels linking warehouses in Tijuana and San Diego have been uncovered by U.S. and Mexican authorities, and a 73-year-old California woman is accused of being the logistics manager for one passageway. On Wednesday, ICE officials arrested a 73-year-old Chula Vista woman on suspicion of overseeing the operation of an underground tunnel leading under the border to an Otay Mesa industrial park in San Diego. Stretching about 700 yards long, it contained a multi-tiered electric rail system, said ICE, which did not indicate the contents of the second warehouse or the warehouses in Tijuana. Since 2006, more than 80 cross-border tunnels in various stages of construction have been found, mostly in California and Arizona.
– Federal agents discovered two more major drug tunnels between California and Mexico this week, reports USA Today. Each began under a warehouse in Tijuana and ended under another in San Diego. The discovery holds a lesson for cartels: If you're going to spend millions building these things, you might want to invest in better fronts. Immigration and Customs Enforcement agents found the first one after noting that the US warehouse had nothing but cheap toys inside, as if it were an exporter, the same front used in a tunnel found last year, reports the Union-Tribune. The discovery of the first tunnel led to the discovery of the second one in a nearby warehouse in the same industrial park. Authorities arrested a 73-year-old woman in Chula Vista, California, suspected of supervising the smuggling operations, reports the LA Times. The tunnels were 600 to 700 yards long and were equipped with lighting and rail systems, with one notably more sophisticated than the other. Unlike previous discoveries—these are the sixth and seventh tunnels found between Tijuana and San Diego since 2010—no drugs were found during the raids.