DNA doesn’t change. At least, that’s what I understand from years and years of watching CSI. It’s there, and it’s not going anywhere. And if it’s already obtained by the police, the genetic fingerprints should stay in the police records for comparison in future cases. Whether or not the DNA sample they still have in their possession is too old is immaterial as what they need should be the DNA profile, the genetic particulars of the sample which should have already been on records, already processed and in print, and not the DNA itself.
Unless the DNA sample is needed for more than just comparative purposes, which is therefore highly suspicious.
And more alarmingly, that despite making such a big deal about the DNA back in 1998 (10 years after the breakthrough in DNA technology and the first conviction in England based on DNA evidence), the Malaysian police has not even bothered to set up a database for DNA evidence they have collected thus far. How far behind are we in scientific technology?
What hope is there to find the killers of Nurin Jazlin and other victims of atrocious crimes then?