Reports said at least six policemen were among those killed in this latest wave of violence that occurred in broad daylight.
The fighting was reported at Kilelengwani area where houses set on fire were still burning mid morning on Monday.
The Kenya Red Cross says it had been able to rescue some of the villagers trapped in houses after more than 300 attackers set them ablaze while armed with guns and machetes.
Dozens of men, women and children who sustained injuries in the overnight skirmishes were being treated in Kenya Red Cross ambulances dispatched there in the morning.
Coast Provincial Police Chief Aggrey Adoli could not give casualty figures but said the situation on the ground remained volatile.
“The situation on the ground is bad, we are in a meeting over the same,” he said.