Chebilat: Armed men patrolled roads in Kenya's Rift Valley on Sunday, while scores of people fled attacks on their homes.

Witnesses said that police fired shots to disperse a gang manning a roadblock. At least 900 people have been killed in post-election violence in the country.

Tribal gangs have burned thousands of homes and forced out occupants perceived as not native to the region.

Clouds of smoke could be seen rising from smouldering homes in the Rift Valley on Sunday. Local media said a school in Eldoret was burned.

The latest violence comes a day before former UN secretary general Kofi Annan was due to reopen talks to end the crisis.