Ethiopian military forces have crossed back into Somalia, four months after leaving, witnesses told the BBC.
Their reported return comes as Islamist militants continue to seize towns from the fragile Western-backed government.
One resident said he saw Ethiopian troops digging trenches in Kalabeyr, a town 22km (14 miles) from the Somali-Ethiopian border.
An Ethiopian spokesman denied the reports. Its troops left Somalia in January after two years in the country.
They entered Somalia in 2006 to help oust Islamist forces from the capital Mogadishu but withdrew under a UN-backed peace deal.
Kilde: BBC Online
