A NSW man who created a fake Facebook account to lure a teenage animal lover bushland 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 yesterday, Justice Peter Hall said Dannevig had committed ''a most heinous crime'' against a ''completely vulnerable and defenceless young woman''.
Dannevig met Belomesoff, of Cecil Hills, on the social networking site Oasis Active just eight days after his release on parole for kidnapping another young woman in 2009.
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 and offered her a job.
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.
On May 12 2010, Dannevig took her into a remote area of Smiths Creek Reserve under the pretence of an overnight training camp.
Justice Hall said Dannevig has never given an account of what he intended to do or why he murdered her, but it was clear that once in the reserve he formed the intent to kill.
During a recorded interview with an undercover police officer in jail, Dannevig said he pushed 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.
In sentencing submissions earlier this month, 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''.
But Justice Hall said Dannevig displayed a ''complete understanding of what he was doing'' and used a ''strategy of deception and lies'' to lure her to bushland away from the public.
Dannevig's mild intellectual disability and history of behavioural problems did not establish that he lacked capacity to reason or judge right from wrong, Justice Hall said.
In December 2009, Dannevig had been jailed for two years for kidnapping a woman and taking her into bushland in Casula.
Justice Hall imposed a minimum sentence of 21 years with a parole period of seven years to allow intensive monitoring of his progress once allowed back in the community.
Outside the court, the sister of Belomesoff's father, Vasily Belomesoff, Angie Juvanshu, said the sentence had bought ''some comfort'' to the family.
Belomesoff was a ''shy, bashful girl'' with a ''quirky sense of humour'', Juvanshu said.
-Sydney Morning Herald