An armed soldier walks past a car destroyed in a blast next to St. Theresa Catholic Church in Madalla, Nigeria, Sunday, Dec. 25, 2011. An explosion ripped through a Catholic church during Christmas Mass near Nigeria's capital Sunday, killing scores of people, officials said. A radical Muslim sect claimed the attack and another bombing near a church in the restive city of Jos, as explosions also struck the nation's northeast. (AP Photo/Dele Jones)
The move came in response to dozens of attacks blamed on Boko Haram, an Islamist group that claims ties to al-Qaeda, most recently a wave of bombings over Christmas that killed nearly 50 people.
The state of emergency will apply to the states of Plateau, Niger, Yobe and parts of Borno, where Boko Haram traditionally has its base, President Goodluck Jonathan said.
Security forces will have more powers to seal off international border crossings and conduct searches and arrests under the new decree.
Full Story: Nigeria’s president declares state of emergency after Christmas attacks