Detectives are investigating the killing of the 66-year-old director of Ndarugo Plantations in Juja, Kiambu County.
Sudhir Shah was sprayed with bullets on the head and stomach near the plantation on Saturday by hitmen on a motorbike.
According to John Gachomo, the head of investigations at the DCI headquarters in Nairobi, Shah was in the company of eight other persons, including Francis Michuki, his co-director, when the incident happened.
Francis, is the son of the late Internal Security Minister John Michuki, who was a partner in the former coffee farm that is currently involved in the production of machine-cut building stones popularly known as ndarugo.
Gachomo said after a meeting at the plantation, the attendees converged for further deliberation when two people on a motorbike commanded everyone to lie down.
An officer accompanying the directors engaged the attackers and a fire exchange ensued. Shah was rushed to a hospital in Thika town where he succumbed to his injuries.
Those who attended the meeting have recorded statements.
Detectives from the DCI combed the scene of crime yesterday and urged the public to volunteer information on the incident.
The officers are also trying to establish the type of gun the criminals used.