Jeremiah Kiereini was the former Head of Civil Service and Secretary to the Cabinet.
He was renown for being the closest Kikuyu to president Moi at a period when the former president was allegedly cracking his whip on the Mount Kenya Mafia.
He died at the age of 90 years in his home. However, the family has not disclosed the cause of his death.
He was also the self-published author of A Daunting Journey.
Retired President Daniel Arap Moi has sent his message of condolence to the family of the former head of the Civil Service Jeremiah Kiereini.