Nigeria's Buhari wins second term as president: electoral commission results

Nigeria's President Muhammadu Buhari on Tuesday won a second term at the helm of Africa's largest economy and top oil producer, a tally by Reuters based on electoral commission results showed.Buhari had a commanding lead of 56 percent compared to 40 percent for Atiku, before the final district was announced.A message posted on Buhari's Twitter feed late on Tuesday showed him smiling and surrounded by applauding staff at his campaign office.