Report just reaching Ceoafrica reveals that a fighter jet of Nigeria's military has mistakenly bombed refugees and aid workers linked to Doctors without Borders and the International Committee of the Red Cross during an operation against Boko Haram in Borno state.

There were deaths and injuries, but the exact number was still unclear, Maj-Gen Lucky Irabor said, adding that soldiers were among the wounded, he added.

Nigeria's defence spokesman, Rabe Abubakar has said that the military is grieving after mistakenly bombing aid workers and civilians in north-eastern Borno state, the epicentre of the insurgency by militant Islamist group Boko Haram.

The spokesman, said that “these kind of mistakes do happen in an operational zone, like the one we are conducting. It is a mistake, an operational mistake.

“There was information that there were terrorist groups around that area and Nigerian aircraft dropped a bomb, but this was wrong information.

“Even in the most developed nations these kinds of mistakes do happen, we are all in grief.

“This was not actually an IDP (internally displaced people's] camp.

“It’s a settlement called Raan in Kala-balge local government in Borno state.

“For now we cannot be certain of the numbers killed, we continue our investigation.” Rabe said.