In December 2012, one of AQIM's top commanders, Mokhtar Belmokhtar, split off from AQIM and took his fighters with him, executing the In Amenas hostage crisis in Algeria weeks later, just after France launched Operation Serval in Mali. Belmokhtar later claimed he acted on behalf of Al Qaeda. In December 2015, Belmokhtar's splinter group, Al-Mourabitoun rejoined AQIM, according to audio statements released by both groups.