The only suspicious purchase has been a background check he purchased through some online site a couple of weeks ago. I found that rather odd. Although, it could be that he was doing it on himself to see what came up. I really don't know. That one has me baffled.
The background check may be him trying to locate and contact an old girlfriend.
Most of the "people search" sites will only give the most basic search info, like name, state, and any aliases or married/maiden names. In order to get additional info, like phone or email, he would have to pay for the full background check.
