Beheading of criminal organization member in shower

This 19-year-old young man embarked on a path of crime and became a member of an armed criminal organization that focused mainly on armed robberies. 3 videos started circulating on social networks. One shows this young man being brutally beaten. The second shows them cutting off his head, you can see this video below. The third after they cut off his limbs. Unfortunately, we do not have the other two videos available. Who is behind the videos is unknown.