He was then admitted to St. John Fisher College in New York, USA, where he pursued a BA degree in political science and history.
[3] He was ordained as a bishop in 1969 and served in that capacity in the dioceses of Machakos and Nakuru before being appointed as Coadjutor Archbishop of Nairobi in 1996 as an assistant to Cardinal Maurice Michael Otunga.
[1] Ndingi was one of the clergy who played an active role in the struggle for the reintroduction of multiparty democracy in Kenya.
[3] He is best remembered for opposing the KANU government's directive that forced voters to queue behind their preferred candidate (Mlolongo)[2] and his confrontation of the provincial administration and the police for their role in political clashes of 1992 when 2,000 people are reported to have died.
[4][5] His death was announced by Cardinal John Njue, urging people to "pray for the repose of his soul".