He had been arrested and charged with murder following a fatal shooting incident involving his bodyguards and a voter in then Kitutu West constituency campaigns.
Ouru Ndege was shot dead after he attempted to attack Dr. Onyonka with a knife during the stormy 1983 campaigns along Kisii-Migori road junction.
This stands for Onyonka, Obure (Chris from Bobasi) Omanga (Andrew from Nyaribari Chache) and Onyancha (David from West Mugirango) to launch the famous "Kebirigo Declaration" in which Nyachae was denounced.
Onyonka alleged that Nyachae had embarked on a series of secret campaigns, recruiting candidates against incumbent MPs so that he could make it to parliament with a clean slate of leaders, if he was cleared by KANU to run for elective seat.
The Kebirigo declaration was therefore meant to assert the authority and legitimacy of each member of parliament from Kisii and also sought to reject the political dominion from Nyaribari, Nyachae's home constituency.