The State Bureau of Investigation has been under scrutiny since February, when Greg Taylor, a Wake County man who had been in prison for 17 years, was exonerated by a panel of judges.
At the center of the mistakes that sent him to prison in 1993: a lab report from agent Duane Deaver, a blood expert at the bureau's crime lab.
Deaver kept a secret that was critical to Taylor's prosecution: A conclusive test showed that material on Taylor's truck wasn't blood, even though Deaver filed a report with prosecutors saying that the truck gave chemical indications for the presence of blood. He later testified that his bosses told him to write his reports in that way.




