The United Nations refugee agency has expressed deep concerns over what's happening in Cameroon. It says more than 500 Nigerian refugees in Cameroon's far north region have been forcibly repatriated. The refugees fled attacks by the insurgent group Boko Haram. They are now however, being forced back. UNHCR says it's distanced itself from the operation but urges Cameroon to offer asylum to the refugees. It's also due to sign an agreement with Cameroon and Nigeria for the voluntary return of 85,000 Nigerian refugees.