A series of grenade blasts in Burundi's capital killed least two people and injured more than a dozen others Monday, witnesses said. Two of the explosions happened in an open market in the Ngagara area of Bujumbura, killing the two. Two other grenades exploded in the center of Bujumbura, injuring 11 people. Another explosion was in the Buyenzi area, wounding at least three people, AP reported.