Ruling party candidate Evariste Ndayishimiye has won Burundi's presidential election by a landslide, preliminary results show, while the main opposition party cries fraud.

The independent election commission (CENI) announced partial results Monday, giving Ndayishimiye 69% of the vote and his chief competitor Agathon Rwasa of the opposition CNL party 24%.

Current First Vice President Gaston Sindimwo of the nationalist party Uprona finished far behind with just 2%.

Party spokesman Terence Manirambona tells VOA's Central Africa service that CNL has its own numbers to prove that Rwasa won.

He said the party was "stunned" to hear what he says are false numbers and accuses the election commission of colluding with the ruling party to keep opposition election observers away from the polls.