A Corporal of the Nigerian Army on Wednesday shot dead four of his colleagues and himself.
He also injured two others.
The soldier whose identity was not made known was serving in the Theatre Command Operation Lafiya Dole, Army Super Camp 15, at Malam Fatori, Borno State.
According to the spokesman of the Nigerian Army, Colonel Sagir Musa, in a statement on Wednesday, the incident happened in the early hours of the day when the soldier went berserk.
The two injured persons in the incident, Musa said, had been taken to the military hospital in Maiduguri and were responding to treatment.
Musa said investigation had started into the cause of the incident.
His words: “Efforts are ongoing to contact the families of our gallant colleagues who paid the supreme price in the line of duty.
“May their gentle souls Rest In Peace.
“Meanwhile, investigation into the case has since been instituted to determine the circumstances that led to the unfortunate incident.”