This was the first thing that came to my mind also. They must have some evidence of a chemical used to subdue Jessica and that is the link as geography alone would not seem enough to go public with this suggestion given how tight lipped they have been on everything else. Especially since the previous cases in 2012 and 2010 are older women. And then, I picked up this weeks copy of Boulder Weekly.
http://www.boulderweekly.com/articl...ss-lsawareness-spacers-may-lead-to-clues.html
And if you read through this very interesting article, you get to the speculation that the police will turn their attention to the Memorial Day attempt at Kitner Lake. In fact, the staff even tried to simulate and abduction at Kitner Lake. Why? Because if it's the same perp in 2010 and 2012 HE FAILED with older women and in his frustration would turn to an easier target - a young child.
Further backed up by the assertion as we've discussed here that there are so few incidents of dismemberment of young children by true strangers. So, what came first? LE thinking this way or this article leading them to think this way. Not sure, but at least a plausible reason for linkage. I would note also, that at least this local report effectively asserts dismemberment throughout the article. Likely speculation given "not intact" but also possible that as local media they know something more from someone close to the case.
Also note, this article suggests that the placement of the BP (and ease of discovery) was an intentional diversion from the location of the body -- which is EXACTLY how it worked for several days. The reason is not to keep LE from discovering the body, but so that the creep could safely go back and revisit the body over and over. It's sort of left unsaid, but implied is for re-gratification if you will (as disgusting as that is... but apparently not uncommon for these types of crimes).
It also suggests that placement of the body and BP were at the "edge" of the perps "awareness space". This makes sense if you look at the map and could easily conclude these to be the West and NorthWest boundaries of his area. It certainly suggests local and in fact Westminster very close to where Jessica lived. Kitner Lake is SMALL. It's a local park. There are tons of other areas around there that you would probably choose and much more concealed if you were willing to venture a little farther from home.
I also wanted to note that also this talk about 3 day weekends -- remember that in Colorado Columbus Day is not celebrated as a holiday like on the East Coast. There was school on Columbus Day. Granted, someone could have been visiting from an area where it was celebrated, but I'm thinking this is just much ado about nothing. I do wish I could find the exact date of the July 2010 attempt at Kitner also but I haven't been able to so far.