Since then, suicide bombings and attacks on military formations have been on the rise.
Mr. Ibrahim, a major general, took over the command of the ongoing counterinsurgency operations in the North-east in May 2017.
Nigeria is replacing the military commander of the fight against Boko Haram after half a year following a string of insurgency attacks despite years of official claims the group has nearly been defeated, military sources said on Wednesday.
Though a large number of Boko Haram hideouts were raided and many terrorists including kingpins reportedly killed by soldiers during the period, well over 50 soldiers including officers were killed between May and now.
Months after the army chief had ordered the capture of Shekau, the sect, using four female suicide bombers, attacked Muna Gari, a suburb of Maiduguri, killing about 14 persons.
The Nigerian Army has killed three Boko Haram insurgents in Sabsawa axis of Sambisa forest area of Operation.
A recent attack was carried out in Biu, Borno state, where two suicide bombers detonated their explosives in a market, killing about 18 people.
Mr. Ibrahim has now been replaced by Rogers Nicholas, also a major general.
The new Theater Commander was until his appointment, the Chief of Logistics at Army headquarters in Abuja. A spokesman for the president, who serves as Nigeria's commander-in-chief, also declined to comment.
It was learnt that Ibrahim has been redeployed to the army headquarters, Abuja.
Brig. -Gen. Sani Kukasheka, the Director, Army Public Relations, made the disclosure in a statement issued in Maiduguri.