New South Wales Police have faced the media to reveal details about the arrest of Chris Dawson.
Dawson, 70, was arrested at his Queensland home on Wednesday morning in relation to the disappearance of his wife Lynette Dawson in 1982.
NSW Police Commissioner Mick Fuller confirmed Dawson was arrested after new witnesses helped 'tie pieces of the puzzle together'.
'The man came quietly with police and was taken to the local watch-house and faces extradition to Sydney,' he told reporters.
He also confirmed charges could still be laid without physical evidence of Lynette's body.
'We've solved homicides before without identifying the body, in this case we won't give up trying to find the whereabouts of Ms Dawson,' he added.
'There are a number of theories in relation to [her body] and we're certainly hoping an interview with this 70-year-old man... will assist us.'
Commissioner Fuller also revealed Dawson is expected to be charged with homicide in relation to Lynette's murder upon his extradition to NSW.