Press Secretary Lee Njiru confirmed the death, adding that a detailed statement will be issued on Sunday.
Jonathan was the eldest son of Moi.
He was a safari rally driver. Gideon Moi, the late's brother later released a statement that is below:
We the family of H.E Mzee Moi confirm the sad news on the passing on of Jonathan Toroitich.
Jonathan will be remembered for his daring exploits in the racing tracks, in muddy and dusty tracks, during this time of Easter.
He was amiable, social and down - to - earth and industrious human being.
We are distraught as family and we ask for your prayers and seek your understanding and indulgence to allow us mourn privately.
We will continue to inform Kenyans on need basis and further arrangements.