 Saprang was sidelined in security plans preceding the Constitutional Tribunal 's 20 May 2007 ruling on the dissolution of the Thai Rak Thai and Democrat Parties . After the 2006 coup , Sonthi had delegated the task of securing Bangkok to Saprang . The pre @-@ ruling plan put Sonthi directly in charge of Bangkok crowd security , allying him with alum of AFPS Class 9 , including Army Chief of Staff General Montri Sangkhasap and First Army Region commander Lt General Prayuth Chan @-@ ocha . 
