Kenyan police have imposed a night-time curfew in the Rift Valley town of Nakuru following renewed political and ethnic violence in the wake of last month's disputed presidential poll.
At least 10 people were killed and around the Nakuru, as rival gangs of young men battled with machetes, metal bars, and bows and arrows.
The Kenyan Red Cross said hundreds of others were injured in the clashes between supporters of President Mwai Kibaki and opposition leader Raila Odinga.
Dozens of armed men barricaded the main highway leading in and out of Nakuru and threw stones at motorists who defied their orders to stop.
Much of the fighting was between members of the pro-opposition Kalenjin and Luo groups, and those of Mr Kibaki's Kikuyu community.
Residents from the worst-affected suburbs of Nakuru fled their homes and sought refuge in nearby towns.
Some 700 people have been killed in clashes since the 27 December election, which Mr Odinga claims was rigged.