The ISIS branch in West Africa, ISWAP, otherwise known as Boko Haram, has released infographic on its recent attacks on military bases in Northern Borno on its media channel.
The attacks, which left over 100 Nigerian soldiers dead, occurred between November 16 and 20.
The group also displayed the fourth Vicker Tank it allegedly captured from the Nigerian forces on the fringes of Lake Tchad.
On November 23, the Islamic State group claimed to have killed 118 people in its self-styled West Africa province in the last one week, after a series of attacks against military bases in northeast Nigeria that have raised fears of a resurgent Boko Haram.
The Islamist militant group said in a video posted online late on Thursday that it conducted five operations in Chad and Nigeria between November 15 and 21, according to the SITE Intelligence Group, which monitors jihadist activity.
No other details were given but the claim follows recent attacks on army bases in Borno state, northeast Nigeria, which has been the epicentre of the deadly nine-year conflict.
Security sources said at least 44 soldiers were killed in an attack in Metele village, near the border with Niger, on Sunday, although one soldier who escaped gave a higher toll.
“The truth is we lost more than 100 men because we were quickly routed,” he said on condition of anonymity from the Borno state capital, Maiduguri, on Friday.
“We were outgunned, so we tried to fight. We realised it was unrealistic so we decided to leave.”
Most of the soldiers were killed as the trucks they were in tried to crash through a perimeter fence at the base but got stuck. Senior officers were among the dead, he added.
Even a search team that came to find the bodies of fallen soldiers on Tuesday was attacked, the soldier said.