The court acquitted former Kenya Pipeline managing director Charles Tanui and fifteen others of conspiring to defraud the parastatal of Sh644 million.
Anti-corruption Magistrate Felix Kombo stated that the conspiracy charge was not established and that it could not exist without an agreement between the accused.
He stated that there was no evidence in their respective roles that the accused persons had a common intention to defraud the Kenya Pipeline Company.
However, the court determined that some of the accused face additional fraud-related charges.
The case involves a tender from Aero Dispenser Valves Company Limited for the supply of Hydrant Puit Valves, including Under Hydrant Valves, as well as two years of operational spares.
The suspects were charged in December 2018 with wasting public funds on the purchase of 58 Hydrant Pit Valves to replace faulty ones at Jomo Kenyatta International Airport.