A look at recent car bombings carried out in Nigeria:
_ April 8: A car bomb detonates in the city of Kaduna in central Nigeria, killing at least 38 people on a busy roadway on Easter after witnesses say it was turned away from a church.
_ March 11: A car bomb detonates outside of a Catholic church in Jos, Nigeria, killing at least 10 people. No one claims responsibility for the attack.
_ Feb. 26: A radical Islamist sect known as Boko Haram claims responsibility for a car bombing in Jos outside of a church that kills at least three people.
_ Feb. 19: A car bomb detonates outside a church compound in Suleja, near Nigeria's capital Abuja, wounding five people.
_ Jan. 20: Boko Haram claims responsibility for a series of coordinated car bombings and gun battles around the city of Kano that kill at least 185 people.
_ Dec. 25, 2011: Boko Haram claims responsibility for a car bomb attack on a Catholic church in Madalla near Nigeria's capital and assaults elsewhere in the country that kill at least 44 people.
_ Nov. 4, 2011: Boko Haram sect members bomb government buildings and shoot their way through the city of Damaturu, killing more than 100 people, while bombs and a suicide attack in Maiduguri leave 4 dead.
_ Aug. 26, 2011: A Boko Haram sect member detonates a car loaded with explosives at the United Nations headquarters in Nigeria's capital, killing 25 people and wounding more than 100 others.
_ June 16, 2011: A car loaded with explosives detonates at the federal police headquarters in Abuja, killing at least two people. Police first call the attack a suicide bombing, but later deny it.