The teenage girl's name remains unknown, however she has reportedly been held for months by Boko Haram to perform suicide attacks along with thousands of others.
Days before, Dikwa refugee camp, in northeast Nigeria, became the unfortunate victim of two female suicide bombers. 58 people were killed and over 70 wounded.
"She said she was scared because she knew she would kill people. But she was also frightened of going against the instructions of the men who brought her to the camp," said Modu Awami, a self-defence fighter who assisted questioning the teenager.
To prove her testimony, she led soldiers to the unexploded vest, said Awami. He was speaking by phone to the Associated Press from the camp that hosts approximately 50,000 people. It was set up for individuals displaced by the terrorist group.
"She confessed to our security operatives that she was worried if she went ahead and carried out the attack that she might kill her own father, who she knew was in the camp," The Associated Press quoted him as saying.
The girl remains in custody to provide further information on other planned bombings. This data is believed to help increase security at the camp, said Satomi Ahmed, chairman of the Borno State Emergency Management Agency.
During its six-year insurgency, Boko Haram has killed approximately 20,000 people and displaced as many as 2.5 million in Nigeria.