Four people were killed on Sunday when two female suicide bombers, including one aged about 15, blew themselves up at a crowded market in Potiskum, northeast Nigeria.
"We evacuated six bodies, including those of the two female suicide bombers, to the hospital. Twenty-one people were injured in the attacks," said a security official in a toll backed up by a health worker.
"One of the bombers looked 23 and the other 15," the security official added.