Adrian Bayley caught on CCTV at the Caltex service station in Sunbury. Source: Herald Sun
HI-TECH police work, including mobile phone tracking and tollway data analysis, provided the crucial breakthrough in the hunt for Jill Meagher's attacker.
Court documents reveal homicide detectives identified Adrian Ernest Bayley as their prime suspect by tracking the movements of Ms Meagher's phone after she disappeared.
After establishing the phone had travelled through a CityLink gantry the details of all vehicles in the frame were examined.
The dominoes then fell, leading police to Bayley in a CSI-style investigation. Police checked the movements of his phone during the same hours.
"The data for the mobile phones of the accused (Bayley) and deceased (Ms Meagher) mirrored each other, moving from the Brunswick area, along CityLink and Calder Freeway to the Sunbury area," a police document said.
Court documents have also revealed:
HEARTBREAKING images, including Jill's discarded handbag and an ABC pencil.
Video evidence shown to the court allegedly shows Adrian Bayley's movements over three days from a laneway, to an out-of-town petrol station and a suburban carwash.
JILL planned to buy a house and start a family with husband Tom before her life was cut short.
BAYLEY enjoyed kebabs and movies with his de facto in the afternoon after the attack.
Bayley, 41, has pleaded guilty to a single count of rape. He has pleaded not guilty to murder and two charges of rape.
Hi-tech trail led to arrest
THE careless act of carrying a dead woman's phone proved crucial to police in making an arrest in the Jill Meagher murder case.
Previously unseen footage shows tragic Jill Meagher's walk home and a hooded man, believed to be her accused killer Adrian Bayley running toward her on the night she died.
It was midday on Saturday, September 22, when Tom Meagher reported to police that his wife, Jill, had disappeared after going out to drinks with colleagues the night before.
He had sent her several worried text messages and scoured Brunswick streets without success.
The first steps of the police investigation were routine: local uniformed officers made general inquiries, including questioning Mr Meagher, local bar owners and hospitals.
It wasn't until police conducted a preliminary search of the streets that the picture began to look grim.
A search of the Hope St laneway, near the streets where Ms Meagher regularly walked, found a dropped ABC pencil.
Soon after, a local man found Ms Meagher's handbag containing items including her ABC ID card.
Brave: Jill Meagher's parents, George and Edith McKeon, and her brother Michael McKeon and husband, Tom, far right, at court. Picture: Jon Hargest
Homicide detectives from Crew 4 then took charge.
"My initial assessment of the disappearance was that it was possibly suspicious and that the investigation would need to be immediately escalated," Detective Senior Sergeant David Butler said.
Police inquiries would later determine that accused man Adrian Bayley cleaned the inside and outside of his Holden Astra on Sunday, September 23.
It was in the boot of that vehicle that Bayley had placed Ms Meagher's body and driven her to Gisborne South.
There he buried her in a roadside grave, about 3 1/2 hours after he raped and allegedly murdered her in the laneway.
Homicide investigators would learn that about 8.15am on the Monday, Bayley took the Astra to Brakes Plus in Fawkner and asked for some work to be done.
Court releases a series of CCTV recordings that show Jill Meagher, and her accused killer Adrian Bayley, at various locations on the night she was killed.
"Adrian said that he had to put a boot mat into the Astra which he got from the wreckers," manager Glen Sadiq told police.
Bayley also had the car's four tyres changed.
Investigators would establish that about 1pm, Bayley asked for a roadworthy certificate so he could transfer ownership of the Astra into his de facto's name.
Alex Volpe, who did the roadworthy, noticed Bayley had a bruised gash on the bridge of his nose.
"He said that he was in a bit of a brawl on the weekend," Mr Volpe said in his statement.
"I just joked and said, 'You need to learn how to duck sometimes.' Adrian just laughed it off."
Adrian Ernest Bayley has pleaded not guilty to murdering Jill Meagher in a Melbourne laneway last year.
As part of their investigation, detectives canvassed the Brunswick area and spoke to business owners and licensees.
They seized all available CCTV footage showing Ms Meagher's movements in the early hours of September 22.
They also identified her Vodafone mobile phone details, and tracked the phone's movement on that morning.
According to the police summary: "The recorded movement indicated that (Ms Meagher's) mobile phone had remained in the Brunswick area until 4.24am, when it began to record movement outside the Brunswick area.
"After analysing the recorded movements it was discovered that (Ms Meagher's) mobile was moving north along CityLink in the vicinity of Moreland Rd at 4.40am and then continued north along the Calder Freeway to Sunbury."
The detectives' next move was to try to identify the vehicle, which at that stage they considered could have been driven either by Ms Meagher or an unknown person of interest.
Jill Meagher and husband Tom, pictured before her tragic death. Picture: supplied.
CityLink records provided a list of vehicles that passed under the Moreland Rd gantry. Each was checked against further databases, leading police to Bayley.
Investigators gained details of his mobile phone, and found its movements from Brunswick and along CityLink and the Calder Freeway "mirrored" those of Ms Meagher's phone.
Detectives were now confident they had identified their prime suspect.
They arrested Bayley on Thursday, September 27 - the same day Bayley's de facto partner, after washing Bayley's clothes, found a broken Vodafone SIM card in the bottom of her washing machine.
"Inquiries with Vodafone in relation to the broken SIM card revealed that it was registered to the deceased (Ms Meagher) at the headquarters of the ABC," the police summary said.
Bayley's de facto told detectives: "I was shocked when I saw the SIM card, and wondered where it had come from."
Adrian Bayley has pleaded not guilty to murdering Jill Meagher. Picture: Facebook
Detectives who executed a search warrant at the Coburg home seized the broken SIM card and pieces of a broken mobile phone.
When asked what he did with Ms Meagher's phone, Bayley told detectives: "I smashed that at home, in the driveway."
Police also took the clothes Bayley wore on the night of Ms Meagher's death, his Astra, and the shovel he used to dig the makeshift grave.
Detective Jennifer Booth showed Bayley's partner some images.
"I produced still photographs taken from the CCTV footage outside the Duchess Boutique (on Sydney Rd) depicting Adrian Bayley wearing a light powder-blue hoodie, a pair of light coloured jeans and a pair of white trainers," Sen-Det Booth said in her statement.
Sen-Det Booth also played the woman CCTV footage.
"'Oh, my God, that's him ... My boyfriend. Adrian Bayley'," the woman exclaimed.
During his interview with police, Bayley made some admissions. He took detectives to where Ms Meagher lay buried and gave investigators a DNA sample.
Bayley, 41, has pleaded not guilty to murder and two charges of rape.
He has, however, pleaded guilty to a single count of rape.
paul.anderson@news.com.au
Jill Meagher's life in pictures
The search for Jill ends in tragedy
Bayley's first court appearance after arrest
An evil deed ends in a dark place
'Devastated' family can now grieve
Worldwide reaction to disappearance on social media
Leave your tribute to Jill Meagher
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