“The bloody battles between Los Zetas and the Cartel del Golfo (CDG) for control of the Tamaulipas plazas in la Frontera Chica (Reynosa, Miguel Aleman, Camargo and Guerrero) and Nuevo Laredo are now spreading west to the Piedras Negras, Coahuila area.

All these cities and towns face the Rio Grande and South Texas and together with the Ciudad Juarez-El Paso plaza are major conduits for the trafficking of drugs and humans north into the Mid-Western and East Coast areas of the U.S..”

http://www.borderlandbeat.com/2010/08/los-zetas-vs-cdg-battleground-spreads.html