Nairobi  - Former United Nations secretary general Kofi Annan was due Monday to push Kenyan leaders on crucial reforms aimed at preventing a repeat of the violence that followed the disputed presidential elections in December 2007.

Annan brokered the power-sharing deal that brought an end to months of tribal violence, which killed at least 1,300 people and displaced hundreds of thousands.

He was due to meet President Mwai Kibaki and Prime Minister Raila Odinga - the two men whose election battle sparked the violence - and other leaders during his three-day visit.

"Clearly, the Kenyan people are expecting more from the coalition government - more unity of purpose, more progress on the reform agenda, more concrete action to end impunity and combat corruption," Annan said as he arrived in Nairobi on Sunday evening.

"Those sentiments are understandable, and I will be urging the coalition government to listen to the voices of the people and do more to push forward the essential reforms."

The Kenyan government has been accused of delaying reforms to the electoral system, the judiciary and land policy, as well as failing to address huge economic disparity.

Annan and other observers say the reforms are crucial to prevent more bloodshed at the 2012 elections.

The former UN boss said he believed that it was still possible to implement the reforms well before the next elections.

Kenyan leaders have also failed to prosecute senior politicians and businessmen accused of instigating the violence, as recommended in an independent inquiry into the violence.

Annan has handed over an envelope containing the names of suspects to the International Criminal Court (ICC). The names have not been made public.

ICC Chief Prosecutor Luis Moreno-Ocampo said Wednesday that his court would try the worst offenders and leave the others up to a special tribunal. Attempts to set up a tribunal have floundered in parliament. (dpa)