A supporter of the Orange Democratic Party hold up a machete in front of a burning barricade, Saturday, Dec. 29, 2007 during riots in the Kibera slum in Nairobi. Kenya's opposition declared victory Saturday in the presidential election on the basis of partial results, but authorities cautioned that not all votes had been counted and appealed for patience. Tensions over the vote erupted into violence in Nairobi and opposition strongholds. (AP Photo/Karel Prinsloo) (Karel Prinsloo - AP)
A Kikuyu supporter of the Party of National Unity of Mwai Kibaki, tears at the billboard of opposition leader Raila Odinga on the outskirts of Nairobi, Saturday, Dec. 29, 2007. Thousands of people waved machetes and shouted tribal epithets Saturday in one of Africa's largest slums as tensions flared over delays in results from Kenya's presidential election, witnesses said. Millionaire opposition candidate Raila Odinga appeared to be leading the closest race in Kenya's history, but only partial and unofficial tallies have been released from Thursday's vote. Early Saturday, some results were showing President Mwai Kibaki narrowing the gap. (AP Photo/Sayyid Azim) (Sayyid Azim - AP)
Kenyan riot police block supporters of the Orange Democratic Party, Saturday, Dec. 29, 2007 during riots in the Kibera slum in Nairobi. Kenya's opposition declared victory Saturday in the presidential election on the basis of partial results, but authorities cautioned that not all votes had been counted and appealed for patience. Tensions over the vote erupted into violence in Nairobi and opposition strongholds. (AP Photo/Karel Prinsloo) (Karel Prinsloo - AP)
Kenyan riot police block supporters of the Orange Democratic Party, Saturday, Dec. 29, 2007 during riots in the Kibera slum in Nairobi. Kenya's opposition declared victory Saturday in the presidential election on the basis of partial results, but authorities cautioned that not all votes had been counted and appealed for patience. Tensions over the vote erupted into violence in Nairobi and opposition strongholds. (AP Photo/Karel Prinsloo) (Karel Prinsloo - AP)
Supporters of the Orange Democratic Party destroy a kiosk, Saturday, Dec. 29, 2007 during riots in the Kibera slum in Nairobi. Kenya's opposition declared victory Saturday in the presidential election on the basis of partial results, but authorities cautioned that not all votes had been counted and appealed for patience. Tensions over the vote erupted into violence in Nairobi and opposition strongholds.(AP Photo/Karel Prinsloo) (Karel Prinsloo - AP)
Supporters of opposition leader Raila Odinga,