Two presidential candidates in Kenya are among four men who have been charged with crimes against humanity at the International Criminal Court for orchestrating the killings after an election in 2007.
Charges against another two officials were not confirmed by the court in The Hague.
Finance Minister Uhuru Kenyatta and former minister William Ruto deny the accusations.
Mr Kenyatta will stand trial with cabinet secretary Francis Mutaura.
They are accused of crimes against humanity, including murder and persecution.
Former Education Minister William Ruto and radio presenter Joshua arap Sang will stand trial in a separate case, as they were on opposite sides during the 2007 election.
The BBC reports more than 1200 people were killed in weeks of unrest and some 600,000 people were forced to flee their homes.
Mwai Kibaki was eventually declared the winner of the election and is serving his second and final term as president.
Raila Odinga was installed as prime minister under a power-sharing deal brokered by Kofi Annan to end the violence. Fresh elections are due early next year.
Mr Kenyatta, the son of the country's first President Jomo Kenyatta, hopes to stand for president. The BBC says analysts suggest that he has a realistic chance of winning.