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Following his arrest, he was photographed in a police car covering his face with a baseball cap.
Numerous were interviewed by police after one of Ms McCartney s former lovers made the grizzly discovery three decades ago, but no one was charged.
Homicide Detective Senior Sergeant Paul Newman told a 1991 inquest that Mrs McCartney - a mother-of-three - was used and abused by men and boys between the ages of 15 and 86 since her husband died 10 years earlier.
A 58-year-old Rowville man was arrested on Thursday and photographed in a police car covering his face with a baseball cap (pictured)
A coroner described a revolving door of male visitors, including members of a local cricket club, schoolboys, council workers, and neighbours.
Man is arrested for the cold case murder of a brother and sister strangled in their home in 1989 dailymail.co.uk - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from dailymail.co.uk Daily Mail and Mail on Sunday newspapers.