Did they see you possess or throw away the knife? If no, then no, the DA has no case.
Definitely worth fighting if they press charges. Good Luck.
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Mr. Feasel has responded quite accurately. The big question is whether they actually saw you possess or throw the knife under car.
You should consider fighting this charge.Ask a similar question
They can always try to make a case, but it will be very difficult to do so. Good luck to you.Ask a similar question
Not a very good case, but you need to be careful making statements like this on the internet. Though it would be very difficult for the DA to trace your post back to you, it is generally unwise to make admissions like this online.
But again, to answer your question, the case sounds terribly weak.Ask a similar question