Mr Fuller said: "That information enabled New South Wales Police to get an arrest warrant for a 70-year-old man now living in Queensland".
The cold case gained worldwide attention this year due to The Australian's investigative podcast series The Teacher's Pet.
Lyn Dawson disappeared without a trace 36 years ago.
Describing it as a "voluminous" evidence brief, Fuller said the additional evidence - including two discovered through podcast - had "helped us tie pieces of the puzzle together".
"Ideally, in this case we will not give up on trying to identify the whereabouts of Lynette Dawson but, from our perspective, it is not crucial to finalising the matter".
Mr Dawson told Lynette's family that she needed time away, and he did not report her missing to police for nearly six weeks.
"Just before 8am today, 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".
It was revealed that Chris Dawson went "quietly" with police following his arrest this morning, and that no new evidence was found during the September dig at the Bayview property.
Commissioner Fuller said police have not given up on finding her remains.
He is expected to be placed on a plane to NSW early on Thursday morning where detectives will begin the lengthy process of charging him with murder before he is brought before a court.
Lynette Dawson on her wedding day.
Prior to his wife's disappearance, Chris Dawson and his twin brother Paul had been star players for the Newtown Jets rugby league club.
He continues to maintain he had nothing to do with his wife's disappearance.
An undated photo of Lynette Dawson, who was last seen in January, 1982.
'What is important to me was justice for Lynette Dawson and her family, and today is an important step forward in that, ' he added.
Chris Dawson has been arrested over the 1982 death of his wife, Lyn.
Mr Dawson has denied killing Mrs Dawson, with whom he has two children.
"We are confident with the case", Supt Scott Cook told reporters on Wednesday.
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.
"We have no doubt whatsoever that Chris will be found not guilty as he is innocent".