The driver is facing charges of dangerous driving contrary to the law, as detectives work to piece together the circumstances that led to the fatal collision.
At the centre of the latest developments is a petrol station security guard who says he witnessed the former lawmaker’s final movements moments before the collision.
A boda boda rider told Daily Nation that he encountered the vehicle at around 1.30am, when it briefly stopped near a hotel in Naivasha and a woman alighted from the front passenger seat.
The latest findings directly challenge earlier media reports and official statements, reframing the incident as a multi-stage crash rather than a single head-on collision.