Police have revealed that they know who killed Kirrawee security guard Gary Allibon.
Tomorrow marks the fourth anniversary of the death of Mr Allibon, 59, who was fatally shot during the armed robbery of a cash delivery van in Sydney’s CBD early on June 7.
But the Robbery and Serious Crime Squad’s ‘‘Strike Force Lorimer’’ has made a significant breakthrough.
Detectives investigating the shooting from 2010 have linked the crime to two other violent incidents in Sydney.
They made forensic links between a vehicle used in the shooting, a stolen high-performance Audi S8 sedan, and the non-fatal shooting of another man in Wentworthville in April, 2009.
Investigators also determined that at least two other vehicles were used by the offenders on the day Mr Allibon was killed.
Detectives found another car, a silver 2004 BMW 5-Series sedan, which was stolen during a violent car-jacking at Maroubra in July, 2009.
It was the same car that was used on the day Mr Allibon was shot.
Police also said a white BMW X5 was involved.
Three cars were used in the crime by the four offenders.
The white BMW was parked at Kensington when the offenders got into the silver BMW.
They then drove to the Audi, also at Kensington, and took that car into the CBD, where it was involved in a minor crash on the Harbour Bridge at about 6am.
They arrived in Sussex Street at 6.10am.
Three of the men robbed the van, and one man shot Mr Allibon in the back and stole his gun.
They fled the scene in the Audi and drove back to Kensington.
Two days later, the Audi was found burnt out in Milperra.
The silver BMW was seized from a car park in Liverpool seven months later.
The white BMW has not been found.
Commander of the Robbery and Serious Crime Squad, Detective Superintendent Luke Moore, said while police were confident they knew who was responsible, they still needed the public’s help.
There is a $100,000 reward for anyone who has more information.
‘‘Gary Allibon was by all accounts a law-abiding, fair-minded and very decent man who was in the wrong place at the wrong time.’’
“We need some more assistance from the public to help us get across the line and make an arrest,” Superintendent Moore said.
Mr Allibon’s widow, Monica, said she hoped the reward would result in the arrest and charging of the person responsible for her husband’s death.
"My husband was killed by someone who can only be described as a cold-blooded murderer," Mrs Allibon said.
“The murder of someone you love changes your life forever.
"I feel as empty today as I did the day of his death.
‘‘I'm hoping this reward will convince someone to come forward and provide detectives with the missing links they need to catch Gary's killer.”