The Wurasa school murders

The Wurasa school murders was a string of schoolchildren from 1975 to 1997 that claimed the lives of 28 children.
1975-1980
The first 3 murders took place over 5 years. the first victim was Misa Nwaranda who was viciously beheaded. 3 years later a 10 year old unnamed boy was found hanging from a tree next to the school. 2 years later a 7 year old girl was found in the school cornfield.
1980-1990
At an unknown date a gunman entered Wurasa School and killed 16 kids before fleeing. 10 years later 4 children were found dismembered in a barrel.
1990-1997
===== in April 1997 a man was seen taking 6 kids into a field killing 5 before he was caught by a villager and decapitated. the man wasn't identified but he is thought to be farmer Osas Bijrahmeen. since Wurasa is situated in an unknown location in the southern African region police cant go to identify the killer. =====