Drug testing problems date back years

Published On: Sep 19 2012 10:39:02 PM CDT   Updated On: Sep 19 2012 11:47:32 PM CDT

Sept. 19, 2012: Local 2 Investigates pours over thousands of Harris County probation department emails, lab reports and letters following last month's explosive courtroom hearing that exposed a drug testing system rife with human error and shoddy record keeping. Robert Arnold reports.