High-powered assault weapons illegally purchased under the ATF’s Fast and Furious program in Phoenix ended up in a home belonging to the purported top Sinaloa cartel enforcer in Ciudad Juarez, Mexico, whose organization was terrorizing that city with the worst violence in the Mexican drug wars.

In all, 100 assault weapons acquired under Fast and Furious were transported 350 miles from Phoenix to El Paso, making that West Texas city a central hub for gun traffickers. Forty of the weapons made it across the border and into the arsenal of Jose Antonio Torres Marrufo, a feared cartel leader in Ciudad Juarez, according to federal court records and trace documents from the Bureau of Alcohol, Tobacco, Firearms and Explosives…

“These Fast and Furious guns were going to Sinaloans, and they are killing everyone down there,” said one knowledgeable U.S. government source, who asked for anonymity because of the ongoing investigations. “But that’s only how many we know came through Texas. Hundreds more had to get through.”