A serial paedophile who molested and killed a schoolgirl in a case that shocked Australia is set to walk free without restrictions after gaming the parole system. Michael Guider, 69, spent just 17 years in jail for the 1986 killing of Samantha Knight, nine, who he snatched off a street near her mother's Bondi home. The former gardener is set to be released from Sydney's Long Bay jail in June after serving his entire sentence, without ever applying for early release. But the decision not to make parole submissions was a calculated move on Guider's behalf, police believe, allowing him to avoid a single release condition. The serial paedophile who drugged, molested and killed nine-year-old Samantha Knight (pictured) is set to walk free from jail without any restrictions after making the calculated decision not to apply for parole Michael Guider, 69, (pictured leaving court in 2002) who has never publicly expressed any remorse over the Bondi schoolgirl's death, will be released on June 6 The family of the young girl (pictured), who disappeared after school on August 19, 1986, have expressed their anguish that Sam's body has never been found 'As far as I'm aware, he's never appeared in person or entered any submissions, he's always said he wants to serve his sentence in full so he can walk free without restrictions,' Detective Chief Inspector Darren Sly told The Saturday Telegraph. Guider first became eligible for release in June 2014 when the State Parole Authority refused to let him out and determined he could seek freedom the following year. Parole was again refused in 2015 at which time the authority decided it would not consider his release again until 2017. Guider did not seek parole in 2017 or 2018. Sam's mother Tess remains heartbroken by the loss of her child, and is still seeking closure decades on. 'Her body has never been found, until it is, how can we move on?' she said. The New South Wales Attorney-General, Mark Speakman, has moved to stop Guider's release by launching court action which would keep the serial child sex offender behind bars for another year. Last Friday Mr Speakman filed an application in the Supreme Court seeking a 12-month continuing detention order against Guider as well as an additional five-year extended supervision order. That second order would have 'stringent conditions controlling where the offender lives, where he can go and who he can associate with,' Mr Speakman told Daily Mail Australia. Sam's mother Tess (left) remains heartbroken by the loss of her child, and is still seeking closure decades on (pictured outside court after Guider was sentenced for manslaughter) This is the block of flats in Imperial Avenue, Bondi, where Sam Knight lived with her mother Tess in 1986 as it is today. Michael Guider had acted as a babysitter for Sam and many other pre-pubescent girls whose mothers he befriended. He assaulted the girls after drugging them Those conditions were likely to include electronic monitoring. 'NSW has the toughest post-sentence detention and supervision laws in the country which make community safety the priority,' Mr Speakman said. Guider has never publicly expressed remorse for the schoolgirl's death - whose disappearance led to one of the largest searches in Australian history and has remained a mystery for 15 years. He was serving a 16-year sentence imposed in 1996 for 60 offences against 11 children when police realised he was responsible for one of Australia's most high-profile unsolved crimes. Police arrested and charged Guider with Sam's murder in February 2001, but he pleaded guilty to manslaughter under the weight of damning evidence, including a confession to his brother Tim, a jailed armed robber. Guider had first molested Sam when she was living with her mother at Manly in 1984 and 1985. He snatched Sam from near her home in Imperial Avenue, Bondi, after school on August 19, 1986. Guider had first molested Sam (pictured) when she was living with her mother at Manly in 1984 and 1985 The honey-blonde, green-eyed girl had been seen that afternoon walking the streets in her uniform. Within days Sydney was plastered with 'Find our Sam' posters which described her as intelligent, outgoing and well-spoken. Guider later claimed he had drugged Sam with the sleeping pill Normison and she died of an overdose on his lounge while he went out to the shops. He told investigators he buried Sam in Cooper Park at nearby Bellevue Hill but dug up her body 18 months later when he saw workmen near her grave. Guider said he then put Sam's remains in a dumpster containing landfill at the Royal Sydney Yacht Squadron at Kirribilli on the other side of the harbour. Guider was sentenced in August 2002 to 17 years' prison with a non-parole period of 12 years for manslaughter. Samantha Terese Knight would be 41 if still alive. Guider (pictured right) was sentenced in August 2002 to 17 years' prison with a non-parole period of 12 years for manslaughter All rights reserved for this news site dailymail and under his responsibility