“Gunmen in a convoy of eight vehicles killed six policemen, a city worker and a civilian and terrorized the population in Ciudad Valles, San Luis Potosi, during a string of consecutive attacks as the convoy crossed the length of the city.
Local media reported that the convoy entered the city between 6:00 PM and 7:00 PM on Friday, July 30, and drove boulevard Mexico-Laredo Boulevard and arrived first at a Coca Cola bottling where they shot down and killed two state police officers without stopping.
Several blocks later the gunmen stormed a municipal police installation and opened fire, killing three policemen and a civilian worker. Another policeman died later that night in a local hospital of his wounds.
On Sunday, August 1, the Mexican Army officially took control of police duties in the city.”