In the East African nation of Burundi, at least 87 people were killed Friday in some of the deadliest violence since unrest erupted earlier this year. The violence began after President Pierre Nkurunziza announced plans to seek what many say was an unconstitutional third term in office, winning re-election in July. On Friday, officials said attackers hit three military sites; residents accused security forces of rounding up people and killing them in retaliatory violence.