Over the last month, the jihadist group has killed at least 174 Nigerien soldiers in three separate attacks.
The large video details several major Islamic State operations inside the Sahel over the last few years.
The Islamic State continues to make inroads in the Sahel, conducting several high-profile raids in the border region between Mali and Niger.
The photos detail the In-Delimane assault earlier this month which left over 50 Malian soldiers dead.
In addition to the prison break, JNIM also claimed two other recent attacks in Mali and Burkina Faso.
Amadou Kouffa, the leader of JNIM’s Katibat Macina, has been designated as a global terrorist by the US State Department.
Abu Abdul Rahman al Sanhaji’s death, if confirmed, follows the death of several other high-profile JNIM leaders over the past two years.
Friday’s assault marks the Islamic State’s deadliest attack in Mali to date.