Eleven people died on Friday evening when a matatu and a petrol trailer collided at Kaburengu on Webuye-Eldoret highway in Kakamega County.
Bungoma County Police Commander, Francis Sang, said reports indicated that the accident took place after the brakes of the trailer failed.
The petrol spilled to the road and firefighters from the county were called to prevent a fire.
The drivers of the vehicles and a pedestrian were among the victims who died at the scene.
Police towed the wreckage to Webuye Police Station.