The police said that the con man spoke to the pensioner as he was leaving a sex club, promising a sex party.
The authorities added that the two then took a taxi to the 70-year-old’s home.
Police said the con man then left with 50,800 euros (54,000 dollars) in cash that he had found in the pensioner’s home.
There was no explanation of why the man had such a large sum in cash in his house.
Police said they have a photograph of the culprit.
DPA/NAN