By Alfredo Corchado
The Dallas Morning News
CAMARGO, Mexico -- The ranch near this border community is isolated, desolate and laced by arroyos -- an ideal place, experts say, for training drug cartel assassins.
Mexican drug cartels have conducted military-style training camps in at least six such locations in northern Tamaulipas and Nuevo Leon states, some within a few miles of the Texas border, according to U.S. and Mexican authorities and the printed testimony of five protected witnesses who were trained in the camps.
Mexican cartels operate training camps near border