A twin suicide bombing by women attackers in the flashpoint area of Lake Chad on Sunday killed two people and wounded 14 others, a security source in the Chadian capital N'Djamena said.
"The two women suicide bombers and two civilians died in the blast," the source told AFP on condition of anonymity, adding that "14 others were injured" in the attack blamed on Nigeria's Boko Haram group on Ngouboua village near the Nigerian border.
The village has suffered repeated attacks by Boko Haram jihadists since they first launched operations in Chad in February.
Suicide bombings - many by women and girls - are fast becoming Boko Haram's preferred method of inflicting civilian casualties.