Completely unaware, they have lived five kilometers apart outside Halmstad.
Rebecka Kristoffersson turns out to have gone to the same school as her half-sister.
See the report: Sperm theft
Mission review can reveal that a doctor at Halmstad hospital took sperm from men who underwent fertility tests and used them for insemination.
A revelation that hit like a bomb in the lives of several people and families.
Rebecka Kristoffersson and her siblings Tobias Andersson and Alexandra Phil are three of five donor children discovered so far who were born with sperm illegally taken by the same doctor from different men.
"Never in my wildest imagination"
- It's a hell of a mess.
I think it's a shame that he is no longer alive and can be held accountable for what he has done and how he was thinking when he did it.
He took that with him to the grave, says Rebecka Kristoffersson.
Even Rebecka Kristoffersson's mother, Anette Andersson, is saddened and upset when she finds out in Uppdrag gränskning's program "Sperm Theft" that all three of her children were born by the doctor taking sperm without permission.
- I feel completely empty.
Never in my wildest imagination could I have imagined that.
"We have the same mouth...and the same nose" - watch when Bengt meets his biological daughter Rebecka for the first time in the clip above.