A 10-year-old is girl reported to have detonated a bomb in northeast Nigeria as another attack killed one at a mosque, a civilian vigilante said on Tuesday.

Musa Ahmad, who works with the military against Boko Haram Islamists, said the incident happened at about 11:30 am in Banki, near the Cameroon border in Borno state.

“A girl of around 10 came by the military barracks and was trying to cross the road into the IDP (internally displaced persons) camp,” he told AFP.

“She was asked to stop by soldiers. But she ignored them. They threatened to shoot her if she didn’t stop. She obeyed and she was asked to lift up her hijab.

“She did and explosives were found to be strapped on her. Suddenly she pulled on the trigger and exploded.”

No-one else was injured, said Ahmad, who added it was the second attempt on the camp in recent weeks.