Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Blast Kills 31 in Northern Nigeria by VOA News At least one explosion has killed at least 31 people in the northeastern Nigerian state of Borno. The blast happened Sunday in the town of Damboa. There was no immediate claim of responsibility. Previous bombings in the region have been blamed on radical militant group Boko Haram. Boko Haram is blamed for about 20,000 deaths since beginning its insurgency in northern Nigeria in 2009. The Islamist extremist group says it wants to create a strict Islamic state in Muslim-majority northern Nigeria.