
Quoting
greenmancan
An anonymous tip alone is not enough to get a search warrant;although, you didn't mention a search warrant.If they had one-- they needed to prove probable cause to the Judge! The police had to create an affidavit and swear on oath that the info. in it is true to the best of their knowledge. Sometimes the warrant will contain the affidavit, sometimes not.Because it is considered active,it won't be public record.I'm not sure how long they can keep it active in this situation though.
Since you were not arrested they have several years to prosecute you, and they can still prosecute if they don't like your results as an informant.Once arrested or indicted they have 180 days to prosecute for felony and 90 days for misdemeanor.(Thats Florida)
If you go to court you can get the discovery and see what kind of probable cause they had.
(I'm not a lawyer but I suffered a raid a year ago.)