Three people have been arrested over the alleged murder of a missing father-of-three who vanished from his Punchbowl home more than two years ago.
The body of 52-year-old Elisha Karmas, who was known to family and friends as Sam, has never been found but homicide squad detectives allege he was murdered.
At 6am on Thursday, detectives arrested a 38-year-old man and his 61-year-old mother at a home in Croydon Park. A 36-year-old man was also arrested at Burwood.
They were taken to Campsie and Burwood police stations where they were questioned over the suspected murder of Mr Karmas.
The 38-year-old man was later charged with one count of murder, and has been refused police bail to appear at Burwood Local Court on Thursday.
Detectives are still questioning his mother and the younger man.
At the time of his disappearance in August 2011, Mr Karmas' wife Jenny pleaded for anyone with information about her husband's disappearance to come forward.
She said her husband, a self-employed builder, had strong Christian beliefs.
"My husband is a family man, he is a gentle, kind man willing to help anyone he can help," she said.
At the time of his disappearance, Mr Karmas was acting as an unofficial mediator in a dispute over a deceased estate.
Police said there was nothing in his background to suggest he was involved in any criminal activity, describing him as a hard-working and committed family man.
Homicide squad detectives launched Strike Force Flaggy to investigate his disappearance in 2011.
Police divers searched the Georges River at Padstow Heights in south-western Sydney in the months after Mr Karmas' disappearance, but his body was never found.
In 2011, they also seized two vans in connection with the suspected murder. Police believe a bleaching product was used to wash the inside of one of the vans.
Police have urged anyone with information about Mr Karmas' disappearance to contact Crime Stoppers on 1800 333 000 or use the Crime Stoppers online reporting page.