In a cautionary tale for the AI age, the scam saw a finance worker in the Hong Kong office of a multinational firm invited via email to join a video call with senior employees.

While initially suspicious of the email, which referred to a secret transaction, the worker was apparently reassured to recognise the faces and voices in the call.

Police said the worker subsequently agreed to transfer $200 million HKD on the instruction of the fake CFO, CNN reports.

Six people have been arrested in Hong Kong in connection with this type of deepfake scam so far.