Boko Haram: Timeline of terror
Abubakar Shekau said Boko Haram would not be defeated by the security forces
- 2002: Founded
- 2009: Hundreds killed when Maiduguri police stations stormed
- 2009: Boko Haram leader Mohammed Yusuf captured by army, handed to police, later found dead.
Boko Haram leader Mohammed Yusuf was killed after his arrest
- Sep 2010: Freed hundreds of prisoners from Maiduguri jail
- Dec 2010: Bombed Jos, killing 80 people and blamed for New Year's Eve attack on Abuja barracks
- 2010-2011: Dozens killed in Maiduguri shootings
- May 2011: Bombed several states after president's inauguration
- June 2011: Police HQ bombed in Abuja
- Aug 2011: UN HQ bombed in Abuja
- Nov 2011: Co-ordinated bomb and gun attacks in Yobe and Borno states
- Dec 2011: Multiple bomb attacks on Christmas Day kill dozens
