Not saying this happened, but it's also entirely possible this license plate doesn't belong to this vehicle. I had my license plates swapped out, unbeknownst to me, in my driveway last year. I don't know exactly what the original owners of the plates were wanted for, but I do know that my plates triggered an alert and I ended up getting pulled over at gunpoint, K9 unit barking, street shut down, the whole 9 yard. I was shaking and told the cop who frisked me "I've never even gotten a parking ticket." Thankfully they decided not to cuff me or sic the dog on me but I heard them discussing it. They said that's getting more and more common. People tend to notice if their plate is completely MISSING, but it takes a lot longer for people to report a "wrong" plate because they just don't notice. So apparently more criminals are swapping out plates rather than just stealing them.
I would think LE should have at least been able to tell by now if this was a wrong plate for this vehicle, but maybe that's something they're still looking into?