For more than 48 hours armed men held the entire town of Marcos Castellanos hostage, killing two people and kidnapping a police officer.
After the attack most of the police force resigned - poorly paid police throughout the country are often victims of the violence they themselves try to battle.
Lack of training and equipment mean they are no match for criminal gangs.
Al Jazeera's Rachel Levin reports from Castellanos, Mexico.
Source: Al Jazeera