Kenya's opposition leader has called off nationwide rallies planned for Tuesday, following disputed elections.
Raila Odinga said he hoped international mediation could solve the crisis. He says he was cheated of victory by President Mwai Kibaki.
The police now say that 600 people have died in election violence - up from the previous official figure of 350.
Seven people were killed in a shoot-out at a police station on Sunday and there have been further clashes in Mombasa.
Some 250,000 people have fled their homes in clashes between rival political supporters, ethnic groups and the police.