How do you report a bandit properly?

I would never have heard of GFTC if not for the bandit running drama earlier. I decided to look up everyone in that team that ran this past marathon. After reviewing their data, I found 3 more bandits from that club. How do I report them?

I recorded their bib numbers, the event where a bandit ran, and took marathonfoto screen shots of their race and races to compare against. I think bandits should realize once they're caught, there'll be more consequences for those around them doing the same