Moitheri holds a Bachelor of Arts Degree in Humanities from the National University of Lesotho. His professional development includes Programme in Security Management, Course in Security Practice, Course in Anti-corruption and Commercial Crime Investigation from the University of South Africa. He has over 20 years of professional experience, having worked as Senior Investigation Officer for the Police Complaints Authority, as Security Superintendent for Letšeng before leaving to join Storm Mountain Diamonds (Kao Mine) as Security Manager. He re-joined Letšeng in January 2016 as Security Superintendent; a position he held until he was appointed Security Manager in March 2017
