Agriculture and Irrigation CS Mwangi Kiunjuri awards former students of Mumbi Girls High School a prize on May 26. He rebuked Rift Valley leaders calling for his resignation over the NCPB scandal, stating he will not be intimidated or threatened. Kiunjuri said he will hand over an audit report to the Directorate of Criminal Investigations and the Ethics and Anti-Corruption Commission on Monday next week, containing incriminating evidence against politicians and NCPB workers, accusing some politicians of defending the cartels. May 26, 2018.