The Islamic State has released a disturbing video showing them behead 10 Christians that the group claims to have captured in Nigeria. An 11th captive, shown in the video in the middle of the group, was shot in the head. 

ISIS didn’t release any details, but claimed that the men were all captured in the northeast state of Borno in Nigeria. They said these killings were to “avenge” the death of their leader Abu Bakr al-Baghdadi and his spokesman Abul Hassan al-Muhajir during a U.S. Delta Force raid in Syria in October.

The video showed the terror group in beige uniforms and black masks lining up behind blindfolded captives, then beheading 10 of them and shooting the 11th victim.

Nigerian President Muhammadu Buhari condemned the murders and pleaded with Nigerians not to let themselves become divided along religious lines.