Nigerian officials have said that a teenage girl packed with explosives by Boko Haram ripped off her vest to avoid taking part in an attack on the refugee camp in Dikwa, Borno State.
Two others with her, however, walked into the middle of hundreds of people lining up for food before they blew themselves up in an attack Tuesday that killed 58 and wounded several others, reported the Associated Press (AP) on Thursday.
Self-defence fighter Modu Awami said on Thursday that the third bomber, looking about 14, has confessed.
Awami, who helped question the girl, said she was scared because she knew she would kill people. A rescue official said the girl gave officials information about other planned bombings.