Bass Coast Crime Investigation Unit detectives are appealing for public assistance after a 91-year-old woman was scammed out of over 130,000 last year.
The woman from Foster received a phone call from a person purporting to be from her bank on 19 September.
The scam caller advised the woman that fraudulent charges had been made on her account, before they attended her property to collect her bank card on the same day.
The offender then used the stolen card to purchase gift cards at a number of stores in Airport West, Altona, Bacchus Marsh, Balaclava, Caulfield, Chadstone, Corio, Deer Park, Elsternwick, Essendon, Footscray, Geelong, Maribyrnong, Hoppers Crossing, Malvern, Moonee Ponds, Point Cook, Port Melbourne Spotswood, Sunshine, Werribee, Williamstown and Yarraville between 19 September and 23 September.
Investigators believe the offender used the victim's card over 130 times before it was cancelled.
Police have released images of a man that they believe may be able to assist with their enquiries.
Anyone with information is urged to contact Crime Stoppers on 1800 333 000 or visit www.crimestoppersvic.com.au
