Police in Australia have released previously unseen photographs from their investigation into the murder of British backpacker Peter Falconio 25 years ago.

Falconio, from Huddersfield, was shot on a remote stretch of highway near the Northern Territory town of Barrow Creek, about 186 miles (300km) north of Alice Springs on 14 July 2001.

His body has never been found and police hope the images could jog memories that could lead to a tip-off. His killer, Bradley Murdoch, died of throat cancer aged 67 in jail last year, without disclosing where Falconio's remains might be.

The images include a full length picture of Murdoch staring straight at a camera during the police investigation.

Falconio's girlfriend Joanne Lees escaped from Murdoch, hiding in scrubland for several hours before she was able to wave down two men driving a truck.

One of the photographs taken by police shows Lees looking traumatised in the hours after the attack. Others show injuries she sustained, including after her wrists were bound with cable ties.

Northern Territory Police Force Commissioner Martin Dole said that 25 years was a "significant milestone" and that he hoped the release of new images could jog memories or lead to a tip-off.