Which of the following is NOT a type of document mentioned as being relevant in crime scene investigations?

Medical records are considered personal and confidential, subject to privacy laws that protect an individual's medical history and treatment details. In the context of crime scene investigations, while they may be relevant under certain circumstances, such as investigations involving a victim's health or cause of death, they are not typically categorized as directly pertinent documents associated with the immediate investigation of a crime scene.

On the other hand, pawn receipts, anonymous notes, and suicide notes can directly relate to evidence in a criminal investigation. Pawn receipts may link items found at a crime scene to a suspect or victim, anonymous notes could provide motives or threats relevant to the case, and suicide notes often offer insights into the mental state of an individual involved in a case. Therefore, medical records stand apart as not being a type of document commonly emphasized in the immediate context of crime scene investigations.