The Supreme Court has overturned a $14 million judgment given to a former death row inmate who accused New Orleans prosecutors of withholding evidence in order to help convict him of murder.

John Thompson had successfully sued the district attorney's office, arguing that former District Attorney Harry Connick showed deliberate indifference by not providing adequate training for assistant district attorneys.

Prosecutors did not turn over a crime lab report that indicated Thompson's blood type did not match the perpetrator in an attempted robbery in 1985. Prosecutors used that conviction to get the death penalty in another case Thompson was involved in.

Prosecutors normally have immunity for their actions while working, but Thompson had convinced a jury there had not been enough training on evidence handling. The court overturned that decision.