The attorney general of the Republic is the head of the Attorney General's Office (Fiscalía General de la República, FGR; prior to 2019, Procuraduría General de la República, PGR) and the Federal Public Ministry of the United Mexican States, an institution belonging to the Federal Government's constitutional autonomous organism that is responsible for the investigation and prosecution of federal crimes. The office is governed mainly by article 102 of the 1917 Constitution and the Organic Law of the Attorney General's Office.

Jesús Murillo Karam is a Mexican lawyer and politician affiliated with the Institutional Revolutionary Party (PRI). He served as governor of the state of Hidalgo from 1993 to 1998. In 1998 he became Undersecretary of Public Security and then joined the campaign of Francisco Labastida in the 2000 presidential election. He is of Lebanese descent.