Two men, aged 18 and 56, and a 53-year-old woman were arrested on Saturday after police executed a search warrant at a home in Wagga during investigations under Strike Force Ralore. Police allege the three people were known to Ms Madgwick.
Ms Madgwick died at a home in Kooringal on September 19 after being found with multiple stab wounds to her upper body. A 31-year-old man, allegedly her partner, was arrested the same day and charged with domestic violence murder. He remains before the courts.
The three accused were refused bail and are expected to appear in court again on December 23.
Ms Madgwick's death was one of multiple across New South Wales that weekend being investigated as a domestic violence related homicide. The Counting Dead Women Australia register reports that 41 women have been killed so far in 2026.