Mohammed Yusuf (29 January 1970 – 30 July 2009), also known as Ustaz Mohammed Yusuf, was a Nigerian Muslim sect leader and founder of the militant Islamist group Boko Haram in 2002.
He was its spiritual leader until he was killed in the 2009 Boko Haram uprising.
The group's official name is Jama'atu Ahlis Sunna Lidda'awati wal-Jihad, which in Arabic means "People Committed to the Propagation of the Prophet's Teachings and Jihad".Born in Girgir village, in Jakusko, present-day Yobe State, Nigeria, Yusuf received a local education.
Later he studied more of Islam and became a Salafi.