A man is expected to face court later today as part of the Homicide Squad investigation into the murder of two women at an Easey Street, Collingwood property in 1977.
A 65-year-old dual citizen of Australia and Greece was arrested at an airport in Rome on 19 September.
He was subsequently extradited to Australia and arrived in Melbourne shortly before midnight on 3 December.
It is expected he will be interviewed by police later today and subsequently face Melbourne Magistrates' Court.
The man will formally be charged with two counts of murder and one count of rape during this court appearance.
The arrest follows the murders of Suzanne Armstrong and Susan Bartlett, who were found dead in their Easey Street home on 13 January, 1977.
Both 27-year-old Suzanne and 28-year-old Susan had been stabbed a number of times.
The pair had last been seen alive on the evening of 10 January, 1977.
Suzanne's 16-month-old son was left unharmed and had been unattended in his cot when police located their bodies.
Over the past four decades, a significant and tireless investigation into the murders has been conducted by detectives from the Homicide Squad.
In January 2017, police announced a $1M reward for information leading to the arrest and conviction of anyone responsible for the deaths of the two women.
Anyone with information is urged to contact Crime Stoppers on 1800 333 000 or make a confidential report online at www.crimestoppersvic.com.au
