More details have emerged about the lead-up to this morning's arrest of Chris Dawson in relation to the suspected murder of his wife, Lynette Dawson.
Dawson, a Newtown rugby league player in the early 1970s, has always been a suspect in the case but denies any involvement in his wife's disappearance.
Police said two fresh witness statements led to the 70-year-old's arrest on the Gold Coast, with officers saying Mr Dawson was "a bit taken back" when he was arrested at his home.
An undated photo of Lynette Dawson, who was last seen in January, 1982.
Commissioner Fuller said police have not given up on finding her remains.
An inquest in 2003 found that Dawson, a former teacher, started an affair with a 16-year-old student who moved in with him days before his wife went missing.
The Teacher's Pet presented evidence suggesting Chris Dawson was responsible for her disappearance, and that authorities had inadequately investigated the matter.
"There are other examples in policing history and history of the courts where people have been convicted of murder without a body", he told reporters.
Mr Dawson's family released a statement yesterday, insisting he would be found not guilty.
He had his head in his hands as the magistrate read out the police case, including allegations of domestic violence against his wife.
Sydney couple Chris Dawson and Lyn Dawson (nee Simms) married in 1970 when they were both 21 years old.
This morning Dawson was arrested at the home of his twin brother on Queensland's Sunshine Coast.
Mr Cowdery told the ABC's Australian Story the case against Mr Dawson was "weak" without a body.
"Today is an important step forward in that".
"We are disappointed at the decision of the DPP as there is clear and uncontested evidence that Lyn Dawson was alive long after she left Chris and his daughters", brother Peter Dawson said, according to the Seven Network.
Mr Dawson would be charged with murder by NSW police, and bail was opposed by Queensland police because of the seriousness of the alleged offence, the court heard.
Mr Fuller said detectives received additional evidence since asking the Office of the Director of Public Prosecutions (DPP) to review their brief of evidence in April.
Homicide Squad Commander, Detective Superintendent Scott Cook, also praised the work of Strike Force Scriven investigators who have worked tirelessly to uncover the truth behind the cold case.
Earlier this week, the ODPP provided advice to police, and following further inquiries, NSW Police detectives applied for an arrest warrant before travelling to Queensland.