The 28-year-old’s disappearance prompted hundreds to join search parties looking for her in parks throughout Melbourne’s inner north.
She was last seen on November 30 in Carlton, by her best friend.
Ms Flack told friends she was going for a walk at Yarra Bend Park in Fairfield and despite making phone contact later that day did not return home.
Her mobile phone, which has not been on for several days, was last active in the area.
The circumstances regarding the death of the woman whose body was found are yet to be determined.