The existing register could be threatened when the European Court of Human Rights is asked to rule next week on a test case of two Britons who want their details removed from the database.

BBC: RELATED BBC SITES

If the justices rule for King, more than 1 million DNA profiles that have been stored in a federal database for matching with future crime scene evidence may have to be purged and others will never be collected, leading some repeat offenders to go free, advocates say.

NPR: Court Takes Up Question Of Arrestee DNA Sampling