Post election violence in Kenya continues to escalate as tribal warfare has now broken out in the slums of major cities and a church where dozens of people were hiding to escape the violence was torched:

According to witnesses and Red Cross officials, up to 50 people died inside the church in a small village in western Kenya after a furious crowd doused it with gasoline and set it on fire.

In Nairobi, the capital, tribal militias squared off against each other in several slums, with gunshots ringing out and clouds of black smoke wafting over the shanties. The death toll across the country is steadily rising.

Witnesses indicate that more than 250 people have been killed in the past two days in bloodshed connected to a disputed election Kenya held last week.

The violence has been a mix of hooliganism, political protest and ethnic bloodletting. Most of the victims have been Kikuyus, the tribe of the president and Kenya’s traditional ruling class.

Kikuyus have dominated business and politics since independence in 1963. They run shops, restaurants, banks and factories across Kenya, from the Indian Ocean coast to the scenic savannah to the muggy shores of Lake Victoria in the west. They make up only 22 percent of the population and are part of Kenya’s mosaic of roughly 40 ethnic groups, which have intermarried and coexisted for decades.

But the election controversy has created a new dynamic in which many of Kenya’s other tribes, furious about the ballot rigging that may have kept Mr. Kibaki in power, have vented their frustrations against them.