TOPSHOT - Men attend the burial prayer of a victim of a suspected Boko Haram attack in Maiduguri on February 14, 2019. - In an incident on the campaign trial, jihadists in the northeast of the country attacked a convoy carrying a powerful state governor, killing four people. The deaths are the latest to overshadow February 16's elections, in which incumbent President Muhammadu Buhari is seeking a second, four-year term of office. (Photo by Aidu MARTE / AFP)