Tom Mboya was murdered on Government Road in front of a pharmacy (now Moi Avenue). Both the actual assassin and the organization funding it are still unknown.

Isaac Njenga Njoroge, who claimed Mboya was his old buddy in court, denied firing the shot and was not apprehended at the scene.
Njenga was chosen by Mboya, Odinga, and Njiiri to participate in training programs in Bulgaria along with a contentious group of young Kanu wingers.

Njenga assimilated into Bulgarian culture, obtained a driver’s license, and frequently posed for pictures while dressed in military garb.

But, a fatal occurrence involving the murder of Mboya years later led to his imprisonment.
What happened to Njenga Njoroge, the alleged perpetrator of the incident?
According to the accepted practice, Isaac Njenga Njoroge, who was found guilty of murdering Tom Mboya, was hung in secret.