Thieves stole a wallet left in a car parked at a Noble Park home.
Greater Dandenong CIU detectives said the thieves used credit cards that were in the wallet to make eight purchases in the Noble Park and Keysborough area.
Police said the car was in a carport in Stuart Street overnight from Tuesday 15 to Wednesday 16 May.
Call Crime Stoppers on 1800 333 000 with any information.