One of the recipients of the Patricia Letters is reporting on the case now. I'm sure she has turned hers over and may be the first to break any news related to that.
One says she won't unless they make her. What I don't know is who got the last one and/or the most devolved one, if it wasn't the last one.
Personally, I don't think Karr wrote them, because he would've gone into much more detail and more histrionics than were in the ones I ever saw.
They did put up surveillance cameras at the gravesite, but I can't recall the outcome - only that JAR was seen at least once there. No one was arrested or determined to have been acting suspiciously - however, it was just for a fairly short time period, IIRC.
It does make sense that Karr *could've* visited at times between 1996 and 2001. I feel certain the BDA is now looking through anything ATL-related or email related after her death, as far as tips.
Who knows - maybe the Tracey "alert" fed into a place where they had reached a brick wall in the Patricia Letters and put it aside long ago. Could be.
Hmm.