Two female suicide bombers killed at least 11 in a remote village of North eastern Nigeria, the Nigerian authorities reported on Sunday.
The attack happened in Dar village, northern part of Adamawa state, Maina Ularamu, the chairman of Madagali local government council reported.
The Boko Haram militants have time and again raided the area, which is near the border with Borno state, also the militants' stronghold.
"Residents fled to the bush. After a while, two women who disguised as fleeing locals blew themselves up... while the gunmen shot at survivors," he told reporters.
Ularamu said "so far 12 corpses have been found" but the Adamawa state police spokesman, Othman Abubakar said 11 bodies were confirmed dead.
Suicide bombings has been a new tactic for the militants to inflict more casualties among civilian population conducting at least seven suicide attacks in this month.
A general tactic, Boko Haram uses two or more suicide bombers in the same location. When people gather to help the victims of a bomb explosion, another suicide bomber explodes himself or herself, causing more civilian casualties.
Same tactics are also used by Boko Haram’s recent attacks in Chad, Cameroon and Niger.
Nigerian military shot dead suicide bomber
Meanwhile, on Sunday, Nigerian soldiers shot dead a suspected suicide bomber who approached a military base, detonating explosive inside her handbag in Maiduguri, the Borno state capital, a military source told AFP.
An anonymous military source said the rapid increase of the suicide bombings in recent weeks, are signs of desperation and frustration of Boko Haram at a fight back by Nigerian military.
"They are looking for every opportunity to hit back, which is why they have resorted to soft-target attacks on mosques and markets and such attacks on a military base is intended to show the terrorists are still strong," the officer added.