He said that some of the insurgents were killed in the Lake Chad Island while others were killed in villages in Northern Borno on Tuesday.
He explained that the troops also ambushed and killed four terrorists, who were escaping from the military onslaught in Northern Borno State.
According to him, items recovered were one single barrel gun, one dane gun and one locally made pistol, four motorcycles, two tricycles, six water pumping machines, and two power generating sets.
The army recently launched a major operation to clear the Boko Haram from the Lake Chad area, where the insurgents are still believed to have a foothold.
Nwachukwu also revealed that troops recued 49 civilians from the terrorists. "The elderly man pretending to be weak and feeble was being searched by men of the Civilian Joint Task Force, when he detonated a suicide vest contained in a bag he was carrying", the statement said. The wounded have been evacuated for medical attention.
"Our hearts go out to those who lost their lives as well as those injured in the callous attack".
He said, "Aside using women and children, the terrorists are now engaging the aged in suicide bombing as witnessed in this recent incident".
The freed hostages included 33 women, 16 children, and four men, Onyema Nwachukwu, a spokesman of the army said.
"They (Boko Haram) have also been detected to now appear clean and well dressed to look unsuspicious and enable them gain access to targets marked for suicide attack".
He said the military has started interviewing the rescued hostages before taking them to camps for displaced persons. Some of the terrorists have also been found to now hide their suicide vests by wearing it on the thigh rather than the waist to appear less bulky and evade detection when searched.
He also urged members of the public to remain vigilant and report suspicious persons and activities to the police or other security agencies.