The authorities in Kenya have been giving more details about a clash between nomadic groups in the remote north of the country which left more than one-hundred-and-forty people dead.

The provincial commissioner Morris Makhanu told Kenyan radio that thirty-eight children and fifty-eight adults were still missing, presumed kidnapped by tribesmen following the attack on the town of Warri earlier this week.

He said fifteen thousand animals were also taken.

The minister for internal security Marsden Madoka said the attack was executed with military precision.

The Kenyan government is investigating whether Ethiopian guerillas from the Oromo Liberation Front were involved, and has sent the army to the area to find survivors.