I kind of doubt that this bag of dirt was - when not raping and murdering girls - sitting up late at night at his computer, compiling his genealogy, or spending hundreds of dollars for DNA tests.
The connection was probably effected through a relative of his who had submitted his DNA for testing.
Regards,
Well, those of us who have no chance of being implicated in a crime, and have some curiosity about ancestry - will keep submitting samples. Those who are criminals and sufficiently intelligent to understand what alleles, chromosomes and genes are, may try to avoid databases. But I would think that folks like this fall into the nicely defined group that commits such crimes, leaves a lot of DNA to be found, couldn’t identify Watson & Crick at the point of a gun, and may not be able to spell “gene”. And that’s where this will be extremely helpful.
don’t they collect DNA on prisoners? He might have DNA on file...