I watched part of the press conference, and they said one of the bullet casings had “Bella ciao, Bella ciao, Bella ciao” written on it, and another had something like “catch this, fascist” on it. Another said “notices bulges OWO”, and another said “if you’re reading this, you’re gay”. Or something like those, I only heard the guy read it once
In my unprofessional opinion, it sounds like the shooter was involved in online radical spaces, but hard to discern exactly what his motive was rn
EDIT: reporting from The Guardian - ‘On one of three unfired casings read “hey fascist! Catch!”, a second read “oh bella ciao” and a third one read: “If you read this, you are gay, LMAO”.’