The Paranormal Pastor(1) recounts a terrifying tale relayed to him by missionaries in Africa. According to their story, a cultist named Mamadou was arrested and sentenced to death for participating in human sacrifice rites. While Mamadou was in jail awaiting his sentence, several people reported seeing him appear covered in blood and screaming before finally disappearing. Even after his death, people continued to report strange 'Blood Crazy Man' sightings. Read more of the story here(2).

1. http://theparanormalpastor.blogspot.com/2008/06/evil-spirit-of-zozubona-fato.html
2. http://theparanormalpastor.blogspot.com/2008/06/evil-spirit-of-zozubona-fato.html