There might be a crime involved when someone wins at roulette, there might be negligence by the casino in maintaining their games. There might be luck. Some people do win hundreds of millions of dollars on a $2 lottery ticket.

The police where I live do not follow up investigating store robberies, they do not follow up on people who pass bad checks, and they definitely do not follow up on eat and runs. More often than not they will answer the phone when someone calls 911, but not much more often than not.

So yes, the idea that the police seem to be at the beck and call of the casinos to detain people with no hard evidence that any crime at all has actually been committed is concerning. At least let us know what phone number they are calling that the police actually pay attention to.

Exactly. And so, the police investigated. When they determined there wasn't a crime (or at least had no proof or evidence of one), they released the accused and required the casino to pay them their full winnings.

Your "exactly" was wrong, because you're using a different meaning of "might be" than the person who wrote the quote, and given the childish "you said it" reply it seems like you did that on purpose.