MA To Drop 6,000 Drug Cases Over Evidence Tampering

Prosecutors will dismiss more than 6,000 convictions tied to Sonja Farak, a former chemist who authorities say was high almost every day she worked at a state drug lab for eight years. It was the second time in less than a year that cases have been dropped because of misconduct by a chemist; more than 20,000 cases were tossed in April after another incident.

Some Judges Still Allowing Disputed Forensic Evidence

Analysis of bite marks, latent fingerprints, burn patterns in arson investigations, footwear patterns and tire treads was once considered sound. It is now being denounced by lawyers and scientists who say it has not been studied enough to prove its reliability and in some cases has led to wrongful convictions. Even so, judges nationwide continue to admit such evidence regularly,