A Pymble couple who allegedly bankrolled multiple investment properties and luxury cars with at least $2.9 million allegedly skimmed from an ATM in the Rozelle supermarket they operated may face more charges.

Yi Zhou Fan, who also goes by Edward, was arrested in October last year after police raided the Rozelle Foodworks that his mother leased for him to operate with his estranged wife Li Lou.

The alleged $2.9 million skimmed from an ATM is believed to have paid for a Pymble home with tennis court and pool.

During the dramatic raids, investigators allegedly found $1 million in cash in a locked room inside the shop, a camera secretly attached to the ATM plus a card-skimming machine inside the ATM connected to a laptop to record card details. The Crown prosecutor called the alleged scam "clever, prolific and determined" during an unsuccessful application for bail in the Supreme Court last week.

Police say that card details were saved onto the laptop and transferred to blank cards, allowing Mr Fan and Ms Lou to allegedly go to any ATM and withdraw cash with the pin code learnt from the video recordings of unsuspecting customers.