A 71-year-old woman fell for con artists in Wesel.
The police announced on Wednesday that there was a high loss.
On Sunday, the woman received a call from a man posing as a police officer.
For several hours, the fraudster would have asked the woman to put an envelope with cash and her bank card and the corresponding pin in front of the front door.
Wesel - The woman would also have withdrawn a larger amount from her savings account and also put it in front of the door.
At first it was not known who finally picked up the money.
The police did not provide any information about the amount of the loot.
dpa