This incident occurred in Ogun state. According to the twitter user who is a corps member serving in the school, about 30 students took part in
drinking a locally made highly intoxicating alcoholic drink known as “Gegumu”. Four of the students took the only female in their group to a stream where they raped her.
After she was found by some group of teachers, she couldn’t even remember what had happened to her. I’m sure this was because of the amount of drink she had consumed.
See tweets below.