Karaba, who also served as Kirinyaga Central (formerly Kerugoya-Kutus ) MP died at the age of 78.
Known also as Mwalimu, Karaba built a distinguished career as a teacher, principal, and education leader before venturing in politics.
Professionally, he served as principal of various schools in Kenya including, Kagumo High School, Highway Secondary School, Kianyaga High School, Kirimara High School, Njegas Secondary School.
Karaba was also the Chair of Kenya Secondary Schools Heads Association (KeSSHA) between 1984 and 1998.