The UN’s refugee agency UNHCR says it is alarmed by an escalation of violence in the east of the Democratic Republic of Congo.

In one week more than 1,200 people have fled by boat to Tanzania – most of them women and children.

More than 7,000 arrived in Burundi after Congolese government soldiers launched attacks against a rebel group earlier this month.

The UNHCR says most people have fled their homes in South Kivu Province because they were stuck between the two fighting groups.