[man]

this dude sounds like he might be a klepto. just a guess. I would recommend that you accept his payment and, depending on how close friends you are with him, tell him never to talk to you ever again, or help him with him problem.

oh, and I have no idea aobut the legal aspects of this. but it's your word against his, etc. it'd be hard for the police to get a warrant for searching his house, and it'd be harder for them to find it. can't see any legal recourse here, but me no expert.