A man who created a fake Facebook account to lure a teenage animal lover into bushland near Campbelltown before killing her has been sentenced to at least 21 years in jail.
Christopher James Dannevig, 22, pleaded guilty last year to the murder of Nona Belomesoff, 18, near Campbelltown on May 12, 2010.
In the NSW Supreme Court today, Justice Peter Hall said Dannevig had committed "a most heinous crime" against a "completely vulnerable and defenceless young woman".
Justice Hall said Dannevig "had a complete understanding of what he was doing in the planning and on the day he murdered the deceased".
Advertisement Dannevig was given a parole period of seven years to allow intensive monitoring of his progress once allowed back in the community.
A female supporter of the Belomesoff family cried out: "Thank you judge, God bless you." She also cried out "murder" as Dannevig was led away by Corrective Services officers.
He will be eligible for parole on August 7, 2032.
Outside the court, Nona's aunt, Angie Juvanshu, said the sentence had bought some comfort to the family.
Kidnapped another woman
Dannevig had been released on parole for kidnapping another young woman just months before the murder.
Eight days after his release from jail, Dannevig met Ms Belomesoff, of Cecil Hills, on the social networking site Oasis Active.
On learning she was passionate about animal welfare, he created a Facebook account under the name Jason Green. He sent her a friend request, telling her he was a team leader at the NSW Wildlife Information Rescue and Education Service (WIRES) and offered her a job.
During sentencing, the Crown said Dannevig showed a "good degree of planning" by "tapping into a passion the young woman had" for animal welfare.
He took her into bushland in the guise of WIRES training on five occasions before he killed her. He asked for her bank account details on the pretence of paying her a wage and also got her to reveal that her PIN was her year of birth.
But Dannevig's barrister, Philip Young, SC, said his client had been assessed as having an intellectual disability, meaning "He is not functioning on the level that 99 per cent of the community are functioning."
The fact that Dannevig used Ms Belomesoff's ATM card - in full view of CCTV - to virtually clear out her account on the day of her death "doesn't suggest a sophisticated and elaborate plan", he said.
He said the online contact and previous bush trips did not prove her death was premeditated.
During a recorded interview with an undercover police officer in jail, Dannevig said the pair had an argument and he pushed Ms Belomesoff, resulting in her hitting her head on rocks that were covered by water. He then held her underwater for two minutes until she drowned.
Mr Young said it was likely Dannevig had hoped to have a relationship with Ms Belomesoff and his actions "occurred spontaneously and on the spur of the moment" after the argument.
The court heard that, in December 2009, Dannevig had been jailed for two years for kidnapping a young woman and taking her into bushland in Casula 13 months earlier.
He was released on parole, including the condition that he undergo counselling, on February 12, 2010 - eight days before he made contact with Ms Belomesoff online - and three months before her death.