Armed members of a tribal group near Uganda's border with Congo killed at least 12 people in multiple attacks against civilians and the security forces, Ugandan police said Sunday, according to AP. The attackers targeted government buildings in three western districts that have a history of anti-government insurgency and tensions among rival tribal groups, said Ugandan police spokesman Fred Enanga. At least three policemen were killed in the attacks along with six of the attackers, who were armed with guns, spears and machetes. Seventeen others were arrested and are in custody, he said. Enanga said the attacks were likely carried out by "radical elements" within a group known as Obusinga bwa Rwenzururu, whose members - from the Bakonzo tribe - have long had a tense relationship with the neighboring Bamba tribe.