A 15-year-old is said to have brought a senior citizen in Eppelheim (Rhein-Neckar-Kreis) for 15,000 euros.
The youth is now in custody, as the police and public prosecutor announced on Monday.
Who should have helped him with the so-called grandchildren trick was initially unclear.
Eppelheim - The unknown accomplice played the 83-year-old on the phone that her son was involved in a fatal traffic accident and needs a deposit of 30,000 euros.
The senior woman trusted the caller and threw 15,000 euros in an envelope from the balcony.
Then she was puzzled and alerted the police.
The officials said they were able to arrest the 15-year-old when he picked up the money on Thursday.
dpa
