-08 Mazda 6 HB, squeaky sound on cabin rv-mirror area.
 

Hi,

So the problem is this: There is a small sound on the cabin that is located around the area of the rear view mirror. Anybody have a clue where the sound could be originated from? Whenever I drive over a small bump the sound is audible, like some of the trims are not fitted correct or that there might be some kind of gap somewhere. It's not a squeaky type of sound but just some audible popping sound.

I know this is a bit of a stretch but if someone has had a problem like this, feel free to reply what the causing issue for this might be ;)

edit: Mazda 6 MK2 Hatchback