Clash that occurred in the northern city of Saltillo, Coahuila, a town that has also been affected by drug violence, stealing the peace of the citizenry.
The following images show are the three gunmen who were killed in front of the Government Center that led to alert other shootings in the population.
Some of the killers were young, reports from reliable sources indicated they belonged to the criminal group of Los Zetas drug cartel that currently faces the territorial struggle in various parts of the country, violence has also been increasingly strong .