Investigators photograph graffiti implicating the Zeta cartel near where 49 corpses were found on the road near Monterrey, Mexico, on May 13. (AFP/Julio Cesar Aguilar)
Investigators photograph graffiti implicating the Zeta cartel near where 49 corpses were found on the road near Monterrey, Mexico, on May 13. (AFP/Julio Cesar Aguilar)

El Mañana cedes battle to report on Mexican violence