Sept. 18 (UPI) -- A suicide attack at an aid distribution point in northeastern Nigeria's Borno state left at least 15 people dead Monday, security officials said.
"It happened during aid distribution by an [non-governmental organization], when people had gathered to receive donations," one rescue worker, who spoke on condition of anonymity, told Press TV. He said 43 people were injured.
It's unclear who was responsible for the bombing, though officials said it bore the hallmark of a Boko Haram attack.
The militant group invaded the Konduga in 2013, and the Nigerian military liberated it in 2015. Boko Haram claimed responsibility for a similar attack on Aug. 16 in the town.
Since Boko Haram first began its insurgency in 2009, it has killed more than 20,000 people and displaced some 2.3 million others. More than 7 million face serious food shortages and 515,000 children have severe acute malnutrition.
Attacks by the group killed at least 223 civilians in Nigeria and 158 in Cameroon since April, double the number of civilian deaths in the five months leading up to April.
Amnesty International said the rise in attacks may be explained by the displacement of Boko Haram militants from the Sambisa Forest in Nigeria to the Mandara Mountains in Cameroon.