Journalist Hedley Thomas hosted the true-crime podcast "The Teacher's Pet", which investigated the disappearance of Lynette Dawson, an Australian woman who went missing in 1982.
The 36-year-old mystery concerns the disappearance of Lyn Dawson from her home on the Northern Beaches of Sydney in January 1982.
Detectives from the NSW homicide squad began reinvestigating her suspected murder in 2015 and sent a brief of evidence to the Director of Public Prosecutions in April this year.
"Without a body, without knowing first of all whether in fact she is dead, without knowing secondly if she is dead, how she died, it's very hard to mount a case of a reasonable prospect of conviction just on motive and the undefined existence of means and opportunity".
Dawson, the subject of globally acclaimed podcast "The Teacher's Pet", has always maintained innocence following Lynette's disappearance in 1982.
"It's my understanding that there were two additional statements that were a by-product of the media and the work that the media has done".
"Statements from witnesses helped us tie pieces of the puzzle together".
Ms Dawson vanished following the painful disintegration of her marriage to her husband, whose extra-marital affair with a teenage student grew in intensity throughout 1981.
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Ms Barnes argued that her client had a brother in NSW with whom he could live if bail was granted and said Mr Dawson was happy to check in at a local police station regularly.
Police have been under fire over their handling of the case.
'What is important to me was justice for Lynette Dawson and her family, and today is an important step forward in that, ' he added.
However, prosecutors have previously said there was insufficient evidence to lay charges. Supt. Scott Cook, the head of New South Wales homicide squad, said in a news release Wednesday.
He has been taken to Southport in Queensland where New South Wales police will apply for his extradition. "Certainly we have solved homicide cases before without identifying the body", he said.
"We have to also ensure Chris gets due process".
Lyn's family has been advised of the arrest and have since requested privacy.
"We've had a cry, we've cuddled, we're just completely over the moon that something has finally happened".
As per The Oz, Lyn's brother Gregg Simms said he was "quite emotional".