Rattling with Rear seat - Design Issue

I am hearing squeaking sounds from the rear seat for the last few days in my Linea (Facelift). I am suspecting that rear seat belts under the seat are the culprit. Does anyone know how to fold the rear seats of Linea ? Pictures will be of great help.

 

Linea doesnt offers foldable rear seat @vinit , so you need to go to FASS to check this out.

 

I have myself seen the FASS guys folding the seat in my Linea during the last service. So its doable, i suppose.