What to do about false hits on criminal background check?

My neighbor’s kid goes to school with my kid. In order to volunteer for things like Field Day, parents like us must undergo a background check that’s run by the HR department of the school district. My buddy and I submitted the forms for that at the same time.

My neighbor then got a call from the school that there was a “hit” on his background check but that it lacked any information, so they were calling him to see if he could explain. The “event” took place back in his home state a thousand miles away on a particular day that, as it turns out, he was actually with me here (we’d taken our kids to see Tron 2).

So, of course, he couldn’t explain to the school’s HR rep what it was about. His next step was to call the criminal division of the courts of his home state and ask them if they could provide more information. Their search turned up nothing, nada, zip.

The school’s HR rep will next followup with whatever service they use to perform background checks. No update on that part yet.

What would you do next to get this totally cleared up?