Although it has been established since 2002, Boko Haram just committed armed violence in 2009. In that year, members of Boko Haram armed with firearms & poisoned arrows attacked police stations & government buildings in Maiduguri, Borno state, Northeastern Nigeria. The Nigerian apparatus responded to the attack by attacking Boko Haram’s headquarters, which led to the death of Mohammed Yusuf. After the death of Joseph, the Nigerian government announced that Boko Haram was gone, but time proved that it was just the beginning.
In September 2010 alias a year after Joseph died, Boko Haram suddenly reappeared his activities as they attacked the prison compound at Bauchi & freed hundreds of prisoners in it. Entering December 2010, Boko Haram detonated a bomb in a market located in Abuja, the capital of Nigeria. After the incident, the Nigerian police arrested 92 suspected members of Boko Haram, but it has not yet succeeded in stopping Boko Haram from continuing armed violence in the following year.
In May 2011, also the inauguration of Jonathan Goodluck as the winner of the Nigerian presidential election, Boko Haram blew up bombs across Nigeria. A month later, it was the turn of the police headquarters in Abuja that was the targets of the Boko Haram bombing. The foreign party also did not escape the attack Boko Haram after, in August 2011, the group detonated a bomb at the UN headquarters in Abuja. Entering December 2011, Boko Haram performed one of his most famous & phenomenal acts, the bombing of churches throughout Nigeria on Christmas Day which resulted in the deaths of dozens of people.
In January 2012, Boko Haram suffered a split after some of his members established a new group called Jama’atu Ansaril Muslimina fi Biladis Sudan (Front of Muslim Protector in Black Africa) or briefly known as “Ansaru”. The main reason for Ansaru’s establishment was that the members of the group rejected Boko Haram’s actions against unrelated Muslims. Nevertheless, Ansaru claims that they still have a good relationship with Boko Haram for fighting for the same ideals. From the time it was first established, the activity of the Ansaru itself was dominated by kidnapping acts against foreigners.
In February 2012, reports circulated that Boko Haram was getting the money he needed to carry out armed activities from Al-Qaeda donors & sympathizers located in Saudi Arabia, Somalia, & the UK. In October 2012, came the recognition of a former rebel member of southern Nigeria that Boko Haram could get an armaments supply from outside because it has connections with high-ranking officials and senior Nigerian military members. Earlier in April 2012, for the first time, Boko Haram appeared outside Nigeria following testimony that there were 100 members of Boko Haram who participated in the conflict in northern Mali.