EXCLUSIVE
A chef accused of murdering a 15-year-old boy late at night was in a car with a former female workmate at the time of the alleged stabbing, while his heavily pregnant fiancée was at home.
It’s alleged that the teenager, Isaac, stumbled across the red Hyundai i30 belonging to duck breeder Johanna Martin, 21, in a back road near Wilton, south-west of Sydney.
But when he tried to get into the car and ripped off a rear door handle, father-of-one, Jacob Greig, 32, allegedly got out and confronted him.
The chef is then accused of slashing the boy with a knife before the startled pair drove off when the boy jumped onto the car and then fell off into the undergrowth.
The teenager’s body was discovered in bushland the following morning by his friends who had originally thought he had left the campsite and gone home.
The deadly confrontation allegedly unfolded after Ms Martin met Greig after his shift at the Bargo Hotel ended about 10pm on Friday, November 8.
The pair then drove to a secluded area near Maldon Weir in Wilton when Isaac approached them, yanking at the door handle.
Police, who have since seized the car, allege that video and audio of the incident from nearby CCTV captured the altercation.
It’s alleged that the teenager, Isaac, stumbled across the red Hyundai i30 belonging to fowl enthusiast Johanna Martin, 21, (pictured) in a backroad near Wilton, south-west of Sydney
Jacob Greig has been arrested and charged over the alleged murder of Isaac, 15
The teenage boy (pictured), who can only be identified as Isaac for legal reasons, was camping with friends at Wilton, south-west Sydney, when he was allegedly stabbed by Greig
During a court hearing, Magistrate Robert Rabbidge was told footage had allegedly shown Greig getting out of the car and saying ‘I’ll f***ing get you good’.
The chef then allegedly told Isaac: ‘I’m going to chop your f***ing hand off,’ the court was told.
Greig then allegedly hopped back into the car before Isaac tried to jump on the moving vehicle as it drove off.
Greig and Martin made the short trip back to his home where he left her and then allegedly dumped his knife in the bin as his fiancée and child slept.
Shortly after 4pm the following day, Greig and Ms Martin, accompanied by her parents, handed themselves in to Narellan Police Station.
Greig was arrested and charged with murder. Ms Martin has not been charged with any offence and there is no suggestion of any wrongdoing on her behalf.
Daily Mail Australia understands CCTV footage from neighbours at her Tahmoor home has been seized by detectives.
The vehicle, still bearing green P-plates, also remains with police as it undergoes forensic examination.
Ms Martin is a celebrated local duck and chicken enthusiast who has won awards for her prize-winning birds, and is an Environmental Protection Authority delegate.
Johanna Martin is said to have met Greig from work before they drove to a secluded area
Isaac’s body was found in bushland off Wilton Park Road at Wilton (pictured), south-west of Sydney by his friends on November 9
Greig (pictured) was refused bail and is next set to front Campbelltown Local Court on January 8, 2025
Greig faced Parramatta Local Court via a video livestream on November 10, with three of his family members attending.
At the hearing, Magistrate Rabbidge said there was ‘nothing more serious than the alleged murder of a 15-year-old’.
‘The facts are quite extraordinary and seem to show a considerable amount of powerful evidence,’ he added.
‘It’s clearly an extraordinary case… Mr Greig is looking at many decades in prison’ if the allegations are proven, said the magistrate.
‘I must do my duty to the community and refuse him bail.’
Greig, who describes himself as a ‘professional pyromaniac’ on social media, was refused bail and is next set to front Campbelltown Local Court on January 8, 2025.
Family friend Donna Young has started a GoFundMe to help his struggling parents with funeral costs.
‘Isaac was a beloved son, brother, and friend. His life, full of promise and potential, was tragically cut short due to an (alleged) act of senseless violence,’ she wrote.
‘Isaac’s family—his mum, dad, and siblings—are now faced with the unimaginable pain of not only grieving the loss of their precious son but also managing the overwhelming costs that come with such a sudden tragedy.’
The fundraising page, which will go towards his funeral costs and supporting his family and traumatised friends, has so far raised almost $30,000.