For those people who do not wish to read that very long (US) report .... there is not one category in the report that excludes Spedding or the other POIs from this crime.
- Age Group Distribution >40 = 9%
- 15 percent are married at the time of the murder
- 50% are employed (as 50 percent were unemployed at the time they committed the crime)
- Occupations - Service Industry 5%
- Living Arrangements - Spouse &/or Children 15%
- Perceived Lifestyle - Friendly To Children 21%
- Personal Problems - Child Abduction/All Murderers … Sexual Problems 42%/3%, Mental Problems 23%/13%
- Prior Crimes Against Children - Sexual Assault (Non-Rape) 45%, Rape (or attempt) 31%, Assault 15%
- Custody Status - the majority of them are ostensibly free of legal controls when they commit the murder
- M.O. Similarities Between Other Crimes - Victim Characteristics 28%, Specific Acts 17%
- 69 percent of the cases involve a sexual motive
- How Chose His Victim - Victim of Opportunity 57%
I haven't listed every category - but I have listed almost all of them, just missed the last few as the post was getting too long, but you can check them at the link - and the POIs fit into all categories.
https://www.ncjrs.gov/pdffiles1/Digitization/201253NCJRS.pdf