 Many weapons from Project Gunrunner were found in a secret compartment from the "safe house" of José Antonio Marrufo "El Jaguar", one of Guzmán's most sanguinary lieutenants.He is accused of many killings in Ciudad Juárez, including the notorious massacre of 18 patients of the reahabilitation center "El Aliviane".It is believed that Marrufo armed his gunmen with weapons purchased in the United States.