Police announced that a suicide letter written by Morrison to a family member was being analyzed by the FBI. Morrison's family gave the letter to police, who then submitted the document to the FBI Behavioral Unit in Quantico, Virginia. In the 14-page letter, Morrison claimed that he was mentally and physically abused by his father as a child, and had suicidal thoughts since he was 21 years old.
The police received a suicide letter from Morrison, detailing his alleged abuse at the hands of his father and years of suicidal thoughts. This letter was then sent to the FBI for analysis.