Australian authorities are expected to charge Chris Dawson, 70, with the murder of his former wife Lynette, who disappeared nearly 40 years ago.
The podcast on the case, Teacher's Pet, has had millions of downloads and recently won The Australian's Hedley Thomas and Slade Gibson a Gold Walkley.
The case is the subject of an investigative podcast series The Teacher's Pet which has uncovered new evidence about the disappearance of Lyn Dawson from Sydney's northern beaches in January 1982.
It comes after detectives from the Homicide Squad's Unsolved Homicide Unit established Strike Force Scriven in 2015 to re-investigate the circumstances surrounding Lynette's disappearance and suspected murder.
Commissioner Fuller said police have not given up on finding her remains.
In April NSW Police asked the Director of Public Prosecutions if there was enough evidence to charge Dawson.
Mr Fuller declared "we certainly won't give up on that search" for Ms Dawson's remains.
"It is my understanding two additional statements were the work of the media", he said.
"They were predominantly statements from witnesses that helped us to pieces of the puzzle is together", he said.
Chris Dawson, the husband of missing Northern Beaches woman Lynette Dawson, has been refused bail in Southport Court.More news: South Korean train crosses DMZ into North Korea
Police arrested Mr Dawson in Queensland and said he would be extradited to NSW.
Despite the fact Ms Dawson's body has not been found, investigators are confident of the strength of their case.
NSW police commissioner Mick Fuller said Lynette Dawson's family were relieved. No trace of Lynette Dawson has ever been found.
"As a result of the investigation and as a result of information that has come from the public, this week we received wonderful information from the DPP that there was sufficient evidence to prosecute", he says.
"We're certainly hoping an interview with this 70-year-old man who's now in custody in Queensland will assist us with the outcome of where the body may be".
Dawson has always maintained his innocence, and claimed his wife had run away to live with a religious cult in remote area of NSW.
Lyn's family has been advised of the arrest and have since requested privacy.
Mrs Dawson's brother Greg Simms said he was "quite emotional" after hearing of the arrest. "There is a long road in front of us in bringing Lyn home, but this is a big step".
"I'm the happiest man alive today, and if Lynette is up there looking down, she'd be smiling at us", he told News Corp Australia.