POSTED: Thursday, December 1, 2011 - 7:19pm
UPDATED: Thursday, December 1, 2011 - 7:56pm
NBC NEWS — U.S. Immigration and Customs Enforcement have released details about yesterday's bust at one of the most elaborate drug tunnels yet discovered.
The 600 yard cross-border tunnel had a complex rail system, complete with an electric cart and an elevator.
Agents found 32 tons of marijuana, which is the largest amount of drugs associated with a single drug tunnel according to officials.
This is the second tunnel drug agents uncovered in November, and the seventh major tunnel found in the last five years.
Officials say that Mexican drug cartels are getting elaborate because they're getting more desperate.