From October 2013 to September 2019, he was the head of the International Commission against Impunity in Guatemala (CICIG).

In August 2022, he took office as Minister of National Defence under President Gustavo Petro.

Later, he was appointed Antioquia Deputy Prosecutor during 1991 and 1994, where he initiated investigations related to torture, extrajudicial executions and abuses.

In 1996 he was assistant magistrate in the Council of State, and a year later he was elected Regional Director of Public Prosecutors' Offices in Medellin for 1997 to 1999.

[1] At the end of September 2013, he was appointed Commissioner of the International Commission against Impunity in Guatemala (CICIG) at the level of Assistant Secretary-General of the United Nations Organization, replacing Francisco Dall'Anese.