Two of Cofreces ' alleged attackers were her classmates , officials say . ( CNN ) -- Authorities are investigating whether it was an extreme case of bullying that led to the death of a 17-year-old student in Argentina , after she was attacked by two women and another girl last week . Comment: A friend said one of the alleged attackers told the victim she had a snobby face .
Two of Cofreces ' alleged attackers were her classmates , officials say . Comment: A friend said one of the alleged attackers told the victim she had a snobby face .