It was at the beginning of March this year, when the older man was going to wash his car, that he was robbed of his wallet with cash and card holders with various debit cards.
They were also then used for an illegal purchase of petrol.
It got "messy"
The three men in the party behaved very independently and ran back and forth.
One of them also sat down and drove the 86-year-old's car without his permission.
It became "messy", the older man has told.
The whole thing must have lasted for about 30 minutes, and when the man came home he discovered that the bag had been opened, but not in such a way as he himself usually opens it.
He then understood that he had been robbed.
Prison for aggravated theft
The man in his 20s has now been sentenced by Västmanland District Court to six months in prison for aggravated theft and must also pay damages to the 86-year-old man.