Hillary Mutyambai - Mutyambai, is a policeman by training, who rose through the ranks to his current position at the anti-terrorism unit where he was director. Inspector General of Police designate Hillary Mutyambai. [Courtesy] In December 2014 the first Inspector General of Police under the 2010 Cons.ution, David Kimaiyo, resigned. President Uhuru Kenyatta appointed Hillary Mutyambai as the Inspector General of the National Police Service to replace the outgoing IG Joseph Boinnet. Mutya. President Uhuru Kenyatta has appointed Joseph Boinnet as the Chief Administrative Secretary in the Tourism ministry and nominated Hilary Mutyambai to succeed him as Inspector-General of Police. Hillary Mutyambai.