The BBC's Elizabeth Blunt in Addis Ababa says there are reported to be food shortages, disease outbreaks and serious human rights violations in some areas.
In its statement, the ONLF urged "mission team members to visit all parts in order to investigate war crimes and not limit their mission to the few routes approved by the [governing] regime".
But our correspondent says it is hard to imagine that the UN team will be either willing or able to travel in central Somali region, also known as the Ogaden, without security clearance from the Ethiopian armed forces....more
