Ten decapitated bodies are discovered inside an abandoned vehicle along a roadside in the Mexican city of Torreón, Coahuila. Reportedly, a written message was left behind by the perpetrators.
Mexican Army troops kill 12 drug cartel gunmen in Nuevo Laredo, Tamaulipas. In separate incidents, police kill five attackers in Torreón, Coahuila, and five police officers are shot dead in Guanajuato.
U.S. President Donald Trump offers Mexico military support to help defeat drug cartels, should his counterpart Andrés Manuel López Obrador request help, after nine American Mexican Mormon fundamentalists, including six children, are killed in an ambush by suspected cartel members in Sonora, northern Mexico.