sentences:  Rizk silenced critics by giving the investigation under UNIIIC-Commissioner Detlev Mehlis his full support while later on he became an outspoken critic of Mehlis' successor Serge Brammertz because of his alleged inactivity in the ongoing investigation.Rizk's term as justice minister lasted until July 2008.He was not appointed to the national unity government headed by Fouad Siniora and was replaced by Ibrahim Najjar.