Where was Inspector Bertozzo trained? ie which school did he graduated from?

Inspector Bertozzo is one of the three upper-echelon police characters appearing in Accidental Death of an Anarchist, Inspector Bertozzo spends the least amount of time on stage. He has a role at the play's beginning, as the policeman interviewing the Maniac for impersonating a psychiatrist. He sees that the Maniac has been arrested many times for impersonation and does not believe the Maniac's claim that he is mad and therefore not responsible for his actions. He seems intent on finding a way to make a charge against the Maniac stick. However, after enduring enough of the Maniac's double-talk, he becomes utterly exasperated and tells him to leave the station.