Army and police reinforcements have been sent to a remote area in the west of the Democratic Republic of Congo where at least 45 people have been killed.

The violence in Yumbi between the Banunu and Batende ethnic groups took place over the weekend and was triggered by a dispute over where to bury a traditional chief.

There has been tension between the two communities for some years.

This outbreak of violence is not thought to be linked to Sunday's presidential election.