Twenty people are feared dead and several others injured after a bus collided head-on with a lorry at Kanga area past Mtito Andei along the Nairobi-Mombasa highway.

Makueni County Commissioner Abdullahi Khalif has confirmed the accident.

Those injured are undergoing treatment at Mtito Andei Sub-County Hospital.

Sources told The Star that the casualties were occupants of a bus that was travelling from Mombasa general direction towards Nairobi when the accident occurred in Kanga area, Kibwezi East Sub-County.

Some of the passengers reportedly died on the spot while others succumbed to injuries while being attended to at Mtito Andei Sub-County Hospital.

Mtito Andei Sub-County Hospital Medical Superintendent Dr Kevin Wamalwa said the accident happened between 7.00am and 8.00am this morning.

"It is a serious accident. We are attending to those who have survived," Wamalwa told reporters.

Wamalwa said he received a phone call on the accident immediately he got to the facility some minutes to 8.00am.

"We are compiling a list of casualties. Some died while undergoing treatment," Wamalwa said.

police responded to the scene, processed and documented it before removing bodies to mourtuary.

Emergency responders who included ambulances and Kenya Red Cross personell helped in the rescue mission.

The cause of accident wasn't immediately established.

Police have launched investigations into the incident.

Several leaders have sent their condolences to the bereived families.

"A fatal road traffic accident at Mtito Andei , on Mombasa road. Over 20 fatalities. The survivors are receiving attention in hospitals. Our condolences to the families of the deceased," Makueni Governor Mutula Kilonzo Junior said.

The accident happened even as Kenyans call for the dualling of the busy Nairobi - Mombasa highway.

Those who spoke to the Star on Sunday said the Road should be expanded and dualled from Kyumbi junction in Machakos County to Mombasa.

They decried the high incidents of fatalities along the highway.