Unknown to the prosecutors and the witnesses, the pancuronium bromide used in the execution was replaced with an unknown corrosive substance, causing Ames to convulse, hemorrhage, and die an extremely painful death.
Unknown to the prosecutors and the witnesses, the pancuronium bromide has been replaced with an unknown corrosive substance (likely a strong acid or alkaline solution). This causes Ames to convulse, haemorrhage, and die an extremely painful death.