The cause of the fire has yet to be ascertained by military authorities.
The Nigerian military could not be immediately reached for comments over the development.
The fallen soldiers including a lieutenant, are troops from 117 Battalion from the 28 Task Force Brigade.
Mr. Benjamin was also tortured to death.
The UN agency identified Borno, Adamawa, and Yobe as states to be most affected.
He once aired in confidence in local militias and hunters to better combat the insurgents if given the needed support.
The governor disclosed that all entreaties made to authorities of wealthy Arab nations for aid yielded no results.
The Police said in December only, nine cases of alleged rape involving minors were reported in various divisional stations in the state.
The attack occurred on Saturday around 8:30 a.m. near Matari village between Minok and Jakana, Borno.
Majority of IDPs rely on agriculture as means of livelihood but cannot access their farmlands due to insurgents’ attacks.
