Almost a decade later, in August 2022, the AFP made a breakthrough in the case while re-examining the images uncovered by Argos in 2014.
Guardian Australia understands detectives sought to identify bedsheets depicted in the background of one of the images and were eventually able to trace them to a childcare centre in suburban Brisbane.
I would guess it’s a pattern only sold in certain areas. For example, an Australian children’s cartoon character print. Combine that with other stuff like the type of wall outlets, or any other branded products only sold in certain countries, and you can start to narrow it down.