Despite Falconio’s remains still being missing, the Northern Territory Police have announced that they have raised the reward from $250,000 to $500,000 for any information that leads to finding him.

“We recognise the passage of time that’s transpired,” NT Police acting Commander Mark Grieve told media today.

“It’s important to remember that it’s never too late to speak with the police, as the details you share could be crucial to the investigation.”

Next month will mark 24 years since Falconio, who was travelling with his girlfriend Joanne Lees, was killed by Murdoch while the pair were driving across the Stuart Highway.

Grieve said police have approached Murdoch “numerous times” over the years for information but have failed to uncover any new leads.

“On all occasions, he’s chosen not to positively engage with police,” he said.

He also described Murdoch as being “not very forthcoming” when police have questioned him over Falconio’s remains.

“There may be someone out there that he’s confided in, whether or not that’s family or friends, we just don’t know,” Grieve added.

Police have been in contact with the Falconio family over the past 24 hours, Grieve said.

He did not comment on reports of Murdoch being given special treatment for his final days after being moved into palliative care.

NT officials yesterday refused to deny reports he has been moved to palliative care and that he has been permitted outings into the community and even back to the prison to say goodbye to his mates.