[ExI] fourth amendment question

[BillK]

On Wed, Oct 22, 2014 at 5:23 PM, spike wrote:
> My American friends: if a prole discovers a way to identify a perpetrator
> (or more likely the family of the perp) who has never been arrested but who
> left DNA at the scene, would that technique be 4th amendment compliant?
>

On the other hand, would you be liable to a charge of obstructing
justice or withholding evidence?

BillK