"The evidence may have blood flakes on them or hair and fiber on them," Nulf explained. "If you have a box fan going in the background, those fibers could be blown across the evidence, lost forever or cross-contaminated into someone else's evidence."
According to Dallas County officials, Chris Nulf, Ph.D., was fired from SWIFS for insubordination, unsatisfactory progress, being unproductive and not following procedures. Dr. Nulf begged to differ.
Dr. Nulf, in a lawsuit to have been filed today, noted the following problems in the lab:
Dr. Nulf and his attorney, Raul Loya, believe that cross-contamination and improperly maintained equipment raise questions about convictions obtained largely as a result of testing performed at SWIFS.