State prosecutors withheld evidence favorable to Brittany Marlow Holberg during her 1998 murder trial that resulted in her being sentenced to death, a federal appellate court panel ruled Friday.

The federal appeals court said the prosecution failed to disclose that a key trial witness was a paid informant.

A federal appeals court has tossed an Amarillo woman’s death sentence after it found that local prosecutors had failed to reveal that their primary trial witness was a paid informant.