Chris Dawson, the husband of missing Northern Beaches woman Lynette Dawson, has been arrested on the Gold Coast and is expected to be charged with murder.
Lyn's niece, Renee Simms, also appeared on Studio 10 and thanked journalist Hedley Thomas for bringing her aunt's case back into the spotlight more than 30 years after her disappearance.
Mother-of-two Lyn Dawson, was last seen on Sydney's northern beaches 36-years-ago.
The police chief added: "What is important to me was justice for Lynette Dawson and her family, and today is an important step forward in that".
"NSW detectives will apply for his extradition at his first court appearance".
Two separate inquests have recommended for murder charges to be laid against a "known person".
It was additional evidence collected during the investigation period that lead to the arrest.
"Earlier this week, the Office of the Director of Public Prosecutions provided advice to police, and following further inquiries, detectives applied for an arrest warrant before travelling to Queensland", NSW Police said in a statement on Wednesday morning.
"There were predominantly statements from witnesses that helped us to pieces of the puzzle is together". We have solved homicide before without identifying the body.
Vidéo d'un homme roué de coups par des policiers: enquête ouverte
Les vidéos sont en cours d'analyse et les enquêtes seraient ensuite dirigées en fonction des circonstances. Opéré une première fois, il doit subir une nouvelle intervention prochainement, selon son avocat.
NSW police have stated they are comfortable with the strength of the case against Dawson despite not finding the body of Lyn.
The Teacher's Pet presented evidence suggesting Chris Dawson was responsible for her disappearance, and that authorities had inadequately investigated the matter. However, his bail was immediately denied due to the "seriousness of the alleged crime".
"No doubt it will be a voluminous brief with an enormous amount of evidence and obviously there will be a number of witnesses that will be called".
The commander of the NSW homicide squad, Detective Superintendent Scott Cook, said he was "confident" in the case.
Meanwhile, Chris Dawson's family has released a statement proclaiming his innocence.
The duty lawyer told the court he was willing to surrender his passport and live with a brother in NSW.
This morning Dawson was arrested at the home of his twin brother on Queensland's Sunshine Coast.
"Its taken a long haul but its going to be a very good Christmas for our side of the family knowing that we've finally got somewhere and we're going to find out what actually happened through the court system", he told the program.
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.