Attackers killed one UN peacekeeper and seriously injured eight others on Friday in Mali's northern Timbuktu region, an area where extremists continue to operate," the United Nations confirmed. The peacekeepers, all from Burkina Faso, were part of a security patrol that was targeted first by an improvised explosive device and then by direct small arms fire seven kilometers (four miles) from their base in the town of Ber, according to UN spokesman Stephane Dujarric.