Chris Dawson arrested and expected to be charged over his wife's murder

Millions have listened to the podcast about the case

Image Millions have listened to the podcast about the case

Former Sydney teacher Chris Dawson has been arrested over the 1982 murder of his wife, Lyn.

"A 70-year-old Coolum man was arrested by detectives from the Queensland Police Service's Homicide Squad in the presence of Strike Force Scriven investigators at Biggera Waters, on the Gold Coast, in Queensland", NSW police said.

The cold case has gripped the nation and grew in momentum following the release of the critically-acclaimed podcast, The Teacher's Pet.

The disappearance of Lyn Dawson - a mother-of-two who vanished from Bayview in Sydney's northern beaches - has been an enduring 36-year mystery.

However, police said the arrest followed three years of renewed investigations.

"They were predominantly statements from witnesses that helped us to pieces of the puzzle is together", he said.

Mr Fuller said detectives spoke to Lyn's family on Wednesday morning and they "were certainly relieved to hear this result".

Fuller said two additional witnesses have come forward since April.

In 2015, NSW homicide detectives established Strike Force Scriven to reinvestigate the circumstances surrounding Mrs Dawson's disappearance and suspected murder.

Through his duty lawyer, Mr Dawson tried to obtain bail so he could voluntarily go to New South Wales today to face court.

"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. Image: AAP Police remained at the home for a week.

Police will use previous interviews they had conducted with Mr Dawson since his wife's disappearance as evidence in the case.

An application for a warrant was lodged after NSW Police received advice back from the DPP earlier this week.

"For it to finally happen it nearly doesn't seem real yet to me".

The former Newtown Jets rugby league player, who is at the centre of the popular Teacher's Pet podcast, appeared in Southport Magistrates Court today with his head bowed, wearing a t-shirt, shorts and bare feet.

The magistrate said the crown alleged domestic violence allegations against Mr Dawson would be raised in evidence, as well as evidence from the woman involved in the affair - Mr Dawson's former student Joanne Curtis.

An undated photo of Lynette Dawson, who was last seen in January, 1982.

Despite that, Mr Dawson did not report his wife missing for nearly six weeks.

"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 their daughters", the statement, from Chris' twin brother Peter said.

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