The Office of the Mexican Attorney-General (hereinafter PGR) is the body of the Federal Executive Branch, which is mainly in charge of investigating and prosecuting the crimes in federal matters and whose Chief Law Enforcement Officer is Mexican Attorney General, who heads the Federal Public Prosecutor and its auxiliary bodies which are the investigative police agents and the experts.

This office is in charge of those issues entrusted to the Mexican Attorney General and the Federal Public Prosecutor by the Political Constitution of the United Mexican States, the Organic Law of the Office of the Mexican Attorney General, its Internal Regulations and other legal ordinances.