According to police, several female suicide bombers killed 16 people and wounded numerous others in northeast Nigeria on Monday.
The attack took place in Borno state, which is considered the birthplace of Boko Haram's insurgency.
There was no immediate claim of responsibility for the attacks. But, the use of female suicide bombers is a tactic employed by jihadist group Boko Haram.
Police spokesman Victor Isuku said the attacks occurred in the village of Kofa, eight kilometers (five miles) from the state's capital, Maiduguri. The attacks took place near a camp occupied by people who were made homeless by Boko Haram violence.
National Emergency Management Agency northeast region spokesman Abdulkadir Ibrahim said, "Two female suicide bombers detonated their explosives at the adjoining Dalori Kofa village, where they killed 16 people."
He added that the two female suicide bombers tried to get into the camp but were thwarted by security personnel.
An earlier death toll stood at 12 or 13 people, but Abdulkadir informed that three of those taken to the hospital had succumbed to their injuries.
Borno has been the state worst hit by the insurgency that has killed more than 20,000 people and forced some 2.7 million people to flee their homes since 2009.
On June 7, Boko Haram killed 14 people in bombings and shootings in Maiduguri.