What a coincidence that CBI Ron has his phone in his hand when Jane asks him if he has seen Lisbon. You can see Ron stares back down at his phone as if he were placing a call. Within a few seconds, Jane receives a call from Red John.

CBI Ron is not my main suspect, but you never know.

Never know, this could be one of the clues that Heller was talking about in the final sequences of S6E1.

There again; I do not believe ANYTHING Heller says.