Kenya's president Mwai Kibaki has called for calm as violence spirals in the east African nation following December's disputed presidential election. This morning, an opposition politician was shot dead outside his Nairobi home and army helicopters opened fire on rival ethnic groups fighting in the volatile city of Naivasha in the troubled Rift Valley.
More than 900 people have died and hundreds of thousands have been displaced in the clashes which mostly pit members of president Mwai Kibaki's Kiyuku tribe against rivals.
Linked to decades-old issues of land ownership, power and money, the violence has been gathering momentum.
International efforts continue to try to help solve the crisis. Talks are planned today, under the mediation of former UN chief Kofi Annan, between Kibaki and opposition leader Raila Odinga. He is demanding Kibaki's resignation and fresh elections. Kibaki says his position as president is non negotiable.