I don't think that. What it does mean is hard to say.
Talk is because a number of those dead were soldiers it may have been an attack of some sort.
I really doubt the shopkeeper story. It could be, but it is such SOP for the ChiComs in major crimes that can't be hidden.
Chinese press (outside China of course) are also talking about the political ramifications. They are saying this hurts Hu Jintao because his contingent are the authorities in this area.