Spokesman Chol Chany for Ethiopia's Gambella region said today that over 1,000 Murle tribespeople carried out the attack. A similar incident in April 2016 saw 208 people killed and 125 children kidnapped.
Spokesman Mawien Makol Arik for South Sudan's foreign ministry says he is aware of fighting in Gambella. He says Ethiopian troops have not crossed the border into South Sudan in pursuit of the accused attackers.
Over the years Ethiopian and South Sudanese tribes have raided each other, often to steal cattle and abduct children to be used as herders.