Police are investigating two men who allegedly tried to buy more than $6000 of mobile phones using stolen credit cards at stores in Narre Warren.
On 23 March, a man twice attempted to use a card at a store in a shopping centre on Overland Drive, police say.
On the first transaction at 12.45pm, he tried to buy more than $4000 of phones. It was declined.
He successfully re-attempted the purchase shortly after 5pm.
Police say the man then unsuccessfully tried to buy almost $2700 of phones from a white goods store at Narre Warren at 8.30pm that night.
The card was believed to be stolen from a South Yarra letterbox between 18 and 23 March.
The next day, a second man allegedly used the same card to attempt the same purchase at the same store.
The transaction was declined. He used a different card to spend about $2000, police say.
On 2 May, the first man allegedly returned to the store in the shopping centre to make a purchase using an allegedly stolen card.
He is described as Caucasian appearance, aged in his mid-20s and with brown wavy shoulder-length hair and a brown beard.
While at the shopping centre, he wore a fluoro-yellow T-shirt, blue pants and a black hat with a blue motif.
At the white-goods store, he wore a black T-shirt, shorts and shoes, and a black hat with a blue motif.
The second man was described as Caucasian appearance, aged in his mid-20s with spiky or messy short hair and a sleeve tattoo on his left arm.
He was wearing a white T-shirt.
Stonnington CIU detectives released CCTV images of two men they wish to speak to as part of the investigation.
Any information to Crime Stoppers on 1800 333 000 or crimestoppersvic.com.au