 Mbemba was then elected as President of the National Commission of Human Rights at a meeting held in the Palace of the Parliament in Brazzaville on 2 October 2009, and he took office on 7 October.In 2013, Mbemba was investigated by the Directorate for Territorial Surveillance regarding allegations of "possession of weapons of war and attempted destabilization of national institutions".In protest, the UP announced on 19 June 2013 that it was suspending its participation in the Rally of the Presidential Majority (RMP) coalition.