Authorities in Kenya say at least 30 people have been killed in fresh clashes between two rival ethnic groups in the southeastern Tana River region.
A local police official says a group of ethnic Pokomo, armed with spears and firearms, raided a village belonging to the Orma people in the pre-dawn hours of Friday.
The Kenya Red Cross says several children and women died in the attack on Kipao village, during which at least 45 houses were set on fire.
Police say they have identified where the attackers came from and are pursuing them.
The two groups have waged a series of deadly attacks and revenge missions as part of an ongoing dispute over land and water.
In August and September, more than 100 people were killed during clashes between the Pokomo, which is largely a farming community, and the Orma, which consists of mainly herders.
The United Nations says some of the killings may be related to increased tensions surrounding next year's general elections.