TIMELINE-Kenya in crisis after disputed elections

(Reuters) - Kenyan police fired teargas to disperse supporters of President Mwai Kibaki on Tuesday, hours before former U.N. Secretary General Kofi Annan arrived to mediate in a crisis caused by a disputed election that has triggered weeks of violence.

Here is a chronology of the crisis:

Dec 27 - Voters elect a new president and parliament. Most opinion polls put opposition leader Raila Odinga of the Orange Democratic Movement in the lead.

Dec 30 - The Electoral Commission of Kenya declares Kibaki winner of the presidential election, he is hurriedly sworn in.

- The ODM wins the biggest number of seats in the parliamentary election.

Dec 31 - The government floods the streets with security forces and maintains a ban on live TV broadcasts after riots convulse the nation.

Jan 1 - A mob torches a church, killing about 30 villagers.

Jan 2 - The government accuses Odinga's backers of "ethnic cleansing" as the death toll from tribal violence rises.

Jan 3 - Attorney General Amos Wako calls for an independent investigation into the election.