Seven people were killed and 60 others injured when two Modern Coast buses collided at Kiongwani along the Mombasa-Nairobi highway, Makueni County Police Commander Joseph ole Napeiyan has said.
Five died on the spot while two succumbed to their injuries later.
Among the dead were the drivers of the two buses.
Those injured in the Thursday 2.40 am collision were rushed to Sultan Hamud Sub-County Hospital for treatment.
Traffic police rushed to the scene to prevent a traffic snarl-up.
"One of the buses was from Malaba town while the other one was heading towards Nairobi when the accident occurred. The bus coming from Mombasa veered off its lane and collided with the oncoming bus," said Mr Ole Napeiyan.
The collision happened at a blackspot which has recorded more than 10 road crashes in the last three weeks.