Is "there were [...], who [...]" or "there were [...] who [...] in the sentence below right?

Hello 👋,

So I (still) have to write a story about the ending of a book. It's about a death, caused by train hoppers. I just don't know whether a comma is necessary in a sentence or not. Tbh, I changed the whole sentence because I really don't know. So I'm just interested which one would be right.
So, in the continued story someone was caught on a CCTV camera. Maybe that's why the comma must be taken out because I then wrote "There were also journalists who broadcasted the crime scene and published the CCTV footage." Or maybe there should be a comma before "who". Or are either options possible?

Thanks!