At least 40 mourners travelling to pick a body for burial were injured when a canter they were travelling in overturned on Monday evening.
Most of the injured were from the same family, witnesses told Nation.
By 6pm Monday doctors at Kisii Teaching and Referral Hospital, Tabaka and Nyamarambe health centres were working to treat those injured.
Two critically injured patients with head and spinal injuries were being treated at Kisii Teaching and Referral Hospital.
Ten more patients were being attended for fractures in the lower limb.
Another one had his jaw disfigured according to Dr Enock Ondari of Kisii Teaching and Referral Hospital.
The mourners were travelling to pick a body from Tabaka Hospital Mortuary for burial when the vehicle overturned at a sharp bend in Riamanya.
Nyansakia Chief Godfrey Mirera, member of the affected family, said the mourners were in a convoy of more than four vehicles when the incident occurred.
The man who was to be buried Monday had died in a road crash, Mr Mirera said.