The Gunmen were former students.
They killed themselves
[Ref: TRTworldHD]
[The hooded attackers were armed with
at least one pistol, homemade bombs
and a crossbow, police say.
Sao Paulo governor Joao Doria said the pair were
believed to be between 20 and 25 years old.
Marcelo Salles, commander of police forces in Sao Paulo state, described it as an "unspeakably brutal crime".]
https://news.sky.com/story/teen-gunm...oting-11664196
Tragic.