Similar situation occurred recently in Massachusetts where an employee in the crime lab falsified drug testing results in hundreds of cases. She basically randomly decided each case (drug / not drugs), and wrote up her results. She cranked out lab results about 10x faster than any of her colleagues, who thought something was odd and tried to have the higher ups check it out. The higher-ups didn't care. the result; hundreds of convictions were overturned due to her tainted testing. Millions lost in wasted prosecutions.
I read about that case. It is absolutely disgusting and those responsible should suffer. Events like in TX and MA broke my support of the death penalty. The only way I will continue to support it is if the Judicial and Executive branches of State Gov agree to suffer the same fate if found to be guilty of executing a citizen on faulty evidence. We know that will never happen because those in power hate accountability.