Former lead detective reveals police bugged car of William Tyrrell's foster-parents

The former lead detective in the William Tyrrell case, Gary Jubelin, has revealed that he interrogated the missing boy's foster-parents and placed a listening device in their car before they were ruled out as suspects. Key points: William Tyrrell's foster-parents were ruled out as persons of interest early in the investigation His foster-mother was interrogated about whether William was wearing shoes Police had previously investigated the theory that William fell from a balcony at the house During an interview with Nine radio, the former detective said he had interrogated, formally interviewed and released the foster-parents, with a "covert operation running" which involved placing a bug in their car to listen to their conversations. Mr Jubelin said the theory William may have died after falling from a balcony at the house in Kendall was investigated back in 2016. " Mr Jubelin hit back at criticism from NSW Police Commissioner Mick Fuller that "time was wasted" during the early years of the investigation, "looking at some persons of interest that were clearly not".