At least one person was killed and dozens wounded in fresh inter-clan fighting in Rhamu district, Mandera North Constituency.
Mandera senator Billow Kerrow said the fighting started Friday night when armed men attacked the town and injured three people.
He added that the fighting continued for the better part of Saturday and Sunday leaving several wounded and others displaced.
Locals said there was a heavy gunfight between the two warring clans amid fears of high casualties.
Police reportedly stayed away as the fighting intensified with officers saying they were yet to access the affected areas to check on the casualties. It is feared that the number of deaths could rise.
The perennial conflicts between the Garre and Degodia clans of Mandera and Wajir counties has been attributed to political and historical border disputes.