At least 180,000 people have been displaced by unrest as the humanitarian crisis grows after last week's disputed election in Kenya, say UN officials.
Some have been housed in makeshift camps while others have sought refuge in police stations or churches, fleeing violence that has claimed 350 lives.
In badly-affected western Kenya nearly all the refugees are hungry, and several children have died of exposure.
A top UN official in Nairobi says about 500,000 Kenyans need urgent help.
The latest developments came as anti-government protests fizzled out and the president said he might accept opposition demands for a fresh election, but only if ordered by a court.
BBC NEWS | Africa | Kenya's humanitarian crisis grows
