Election observers sit in an empty polling station for the presidential elections in Bujumbura, Burundi, Tuesday July 21, 2015. Gunfire and explosions rocked the capital overnight, leaving at least one dead. Burundi has been rocked by violence that has left more than 100 people dead. Over 144,000 people have fled the country since the ruling party announced President Pierre Nkurunziza’s candidacy in April. (AP Photo/Jerome Delay)