Last I checked military investigations until complete are classified so I think either they are lying, their source is lying or they need to both be going to jail.
Have you considered the possibility that the Pentagon is intentionally "leaking" this information in order to take some of the steam out of the final report when it is issued?
If there are no repercussions to any of these sources for "leaking," then you can pretty well figure that these stories are dribbling out with the specific authorization of the military.