THE Victoria Cafasso murder cold case won't be closed until a killer is found, Tasmania Police say.
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At least one new lead in the 20-year-old mystery was given to Launceston detectives earlier this year following a public tip-off, Fairfax Tasmania revealed last month.
But Launceston CIB Detective Inspector John King does not consider the lead a major breakthrough in the case and insists police will keep looking for something concrete.
Ms Cafasso was visiting family in Tasmania when she was savagely beaten and stabbed to death on Beaumaris Beach.
The 20-year-old Italian student was found with 21 knife wounds on her body, two of which were likely fatally delivered to her chest by a thick hunting knife.
Ms Cafasso also had bruising to her arms, missing teeth and facial fractures caused by a blunt object.
It is believed the initial blow with the blunt object knocked her unconscious before the frenzy began.
Her body was discovered by Margaret McIntyre, who was walking her dog about 1.30pm, 52 metres away from the initial crime scene.
Analysis of the body suggested she was not sexually assaulted before or after the attack.
Detective Inspector John King said three teams of detectives had since tried to find the answers.
Today, a single case officer monitors new and old information received about the murder.
A large pool of people of interest were questioned about the murder and a 2003 coronial inquest found that one of those people most likely killed Ms Cafasso.
Detective Inspector King said the major challenge for police today was the sheer volume of evidence that has been accumulated in the past 20 years.
"The amount of information received by police about the murder and the number of suspects police had all had to be accessed," he said.
The public crime scene also greatly expanded the number of possible suspects, he said.
While there are no current suspects in Ms Cafasso's case, police do have people of interest.
"We want to highlight that this case is never closed for us," Detective Inspector King said.
Anyone with information about Ms Cafasso's murder should contact Crime Stoppers on 1800 333 000.