They say fingerprint evidence doesn't lie and for the most part that's true. However government officials involved in the collection of evidence do horrible things.
In 1990 Shirley Kinge was convicted in an arson case where four people died. The investigator NY State Police Trooper, Robert M Lishansky was an 11 year veteran, considered one of their brightest and best investigators.
Lishansky was lifting prints from paper copies of fingerprint cards with standard lifting tape. Then claiming he lifted them at crime scenes.
Prints “collected” by Lishansky looked identical to those normally found at crime scenes. However after analysis the chemical makeup of the prints was copier toner, not fingerprint dusting powder!