This just in today : Dave Jones has been arrested, and is now locked up in Sydney jail.
A big engineering company in the building that mr. Jones works in has handed over a surveillance video to the police. Although the quality of the video and audio was pretty low (ironically, said company was thinking of asking mr. Jones to fix this), and identification of the perpetrator is difficult, a man can clearly be seen sneaking into the company premises wearing a T-shirt depicting a flux capacitor, whispering something with 'Flynn', then grabbing the scope in question, muttering something with 'dazzler', and sneaking out again.
Investigation is ongoing.