'Probe' in a case like this could mean just about anything. LOL!
With the testimony of Dec 15, I believe that this witness intimidation needs to be remembered.
From the US Attorney General:
http://www.freerepublic.com/focus/f-news/1754981/posts
Latest on Lab testimony:
http://www.freerepublic.com/focus/f-news/1753040/posts