Police officers outline suspected Boko Haram militants, as a cache of weapons are displayed on a table, in Maiduguri, northest Nigeria, on July 18, 2018. / AFP PHOTO / AUDU MARTE

Police officers outline suspected Boko Haram militants, as a cache of weapons are displayed on a table, in Maiduguri, northest Nigeria, on July 18, 2018. / AFP PHOTO / AUDU MARTE

Police officers outline suspected Boko Haram militants in Maiduguri, northest Nigeria, on July 18, 2018.
 / AFP PHOTO / AUDU MARTE

Police officers outline suspected Boko Haram militants in Maiduguri, northest Nigeria, on July 18, 2018. / AFP PHOTO / AUDU MARTE

A picture shows weapons, allegedly belonging to a group of suspected Boko Haram militants, displayed by the police officers, in Maiduguri, northeast Nigeria, on July 18, 2018. / AFP PHOTO / AUDU MARTE

Police officers outline handcuffed suspected Boko Haram militants in Maiduguri, northest Nigeria, on July 18, 2018. / AFP PHOTO / AUDU MARTE

A picture shows jewellery items and banknotes recovered from suspected Boko Haram militants, displayed by the police, in Maiduguri, northeast Nigeria, on July 18, 2018. / AFP PHOTO / AUDU MARTE

Police officers outline suspected Boko Haram militants in Maiduguri, northest Nigeria, on July 18, 2018.
 / AFP PHOTO / AUDU MARTE