A Kensilver bus travelling from Meru to Nairobi was involved in a road accident at the infamous Nithi bridge along the Meru-Embu highway.
Four people died on the spot and 8 others sustained serious injuries.
The Nithi County police commander Zaccheaus Ngeno confirmed the incident.
He said the cause of the accident is yet to be established as investigations are underway.
The deceased included two female passengers,one male passenger and a minor.
The eight injured were rushed to Chogoria and Chuka hospitals.
“I want to confirm that we have had a fatal accident along this route. My condolences to those who have lost their lives. We are yet to know what exactly the cause of the accident is because that is subject to investigation,” said the police commander.
“We call upon drivers and more especially the owners of motor vehicles to ensure their vehicles are roadworthy at all times, and more so the public service vehicles,” he added.