Sadiku (Boko Haram)

Abubakar Saidu (born Adamu Yunusa), better known by his nom de guerre Sadiku or Mallam Sadiku, is a Nigerian Islamist militant who is a senior member of Boko Haram. The leader of one of Boko Haram's most prominent factions, he was a key figure in the group's expansion outside of northeast Nigeria.

Originally sent to Niger State by Boko Haram leader Abubakar Shekau in 2014 to secure the loyalty of the exiled Salafi jihadist Darul Islam movement, he formed a militant cell in the state that expanded over time. Sadiku's faction has formed numerous alliances, including with local bandits and the Christian-majority Gbaygi people. His faction has been responsible for numerous attacks and kidnappings in the region, most famously the Abuja–Kaduna train attack which the group gained millions of dollars from. It has also been implicated in attacks such as the Papiri kidnapping and the 2026 Kwara State attacks.