KENYAN security forces have closed the border with southern Somalia’s Bulo-Hawo district to stop fighting between factions of the Somali Nation Front from spilling into Kenya, police officials said on Friday. Kenyan security started preventing people from crossing the border from Somalia on Thursday after the killing in Bula-Hawo of SNF faction leader Ali Nur Mohamed Mukhtar and four others, police in Mandera said. The fighting Thursday was triggered by a power struggle within the SNF supporters who inhabited both sides of the Bulo-Hawo. Bulo-Hawo, which remained tense on Friday, also borders Ethiopia, which subsequently sent troops to the area on Thursday night, locals also said by telephone on Friday.