SITE Intelligence Group, an organization that tracks jihadi websites, reported Saturday the Islamic State group has published an infographic saying its West Africa branch, Boko Haram, has launched more than 100 attacks in the past two months. The ISIS graphic claims the Nigeria-based militants killed more than 1,000 people from Oct. 14 to Dec. 12.

The graphic, which was posted on social media Saturday, says these deadly attacks included 67 suicide bombings and the firing of more than 120 rockets. The data were apparently collected from various media reports, SITE said.

Since launching its Islamic insurgency in northeast Nigeria six years ago, Boko Haram has expanded its attacks into neighboring Cameroon, Niger and Chad. The group has killed some 20,000 people and displaced millions. The radical Sunni militants pledged allegiance to the Islamic State group, also known as ISIS, in March. Like ISIS, Boko Haram seeks to establish a caliphate governed by Shariah law.

While battling the Boko Haram insurgency at home, Nigeria is deciding whether to join a Saudi-led military alliance to fight ISIS, which controls swathes of Iraq and Syria. Nigerian President Muhammadu Buhari said last week the previous administration under Goodluck Jonathan spent “billions of naira and hundreds of millions of dollars” to equip the military in the fight against Boko Haram, “but with several abuses of trust,” Nigeria's Premium Times newspaper reported. Buhari has repeatedly accused former governments of corruption and mishandling funds.

Since taking office in late May, Buhari has vowed to eliminate graft and neutralize Boko Haram. The Nigerian military has retaken much of the group’s northern territory this year, and in response, the militants have ramped up attacks. Most recently, Boko Haram gunmen raided the hometown of Nigeria’s army chief in northern Borno state at dawn Saturday. The attack led to a fierce shootout with Nigerian troops, though there was no immediate report of casualties, Agence France-Presse reported.