> His DNA sample was on record after he had willingly given it to them as part of an investigation into a burglary at his mother's home some years earlier. Les

> His DNA sample was on record after he had willingly given it to them as part of an investigation into a burglary at his mother's home some years earlier. Lesson to everybody: Don't ever voluntarily give your fingerprints or DNA. Once they get into the government databases, you can (a) never retract them (and nor can you change your fingerprints or DNA), and (b) you can fall victim to false matches. Here's a similar case of a false match -- in this case for fingerprints: Portland-area lawyer Brandon Mayfield was arrested in May 2004 because his fingerprint matched one found on a bag of detonators near the train station in Madrid in the March 11 2004 bombing, which killed 191 people. But Spanish authorities said the fingerprints belonged to another man, an Algerian. A US federal court later threw out the case against Mayfield, and the FBI expressed regret for the "fingerprint-identification error". As a former Army officer, Mayfield's fingerprints would be on file with the government. A law enforcement official said the fingerprints were not on file because of any crime or as part of the government's terrorism databases.