A suspicious transaction report is an STR. These are reports on transactions where there are reasonable grounds to suspect that there is money laundering, terrorist financing, sanctions evasion or an attempted transaction that could be linked to those three offences.
Once that information is passed to FINTRAC, it's confidential as to how it's handled and whether it's disclosed to law enforcement and how that's done. I would encourage engagement with FINTRAC and FINTRAC's annual report to better understand the potential outputs of STRs and how they use that information.