An elderly woman had £2,000 taken from her bank account after thieves followed her from a cash machine and stole her card.
Police are looking for two men and a woman who followed the 75-year-old victim from Barclays Bank in Sutton High Street after she withdrew some cash.
She later boarded a route S1 bus on Brighton Road, Sutton, which is where officers believe the suspects stole the victim's bank card from her bag.
The trio then withdrew £2,250 from the victim's bank account, using her bank card and pin.
Officers from the Metropolitan Police Service's Roads and Transport Policing Command are appealing for help in identifying the suspects.
Anyone with information is asked to contact PC Tracy King leading the investigation on 07775 010 390 or Crimestoppers anonymously on 0800 555 111 quoting ref: 4006105/15.
