The FBI must have a good profile on the killer. Knife deaths are the third most common murder weapon and far less than hand guns. Definitely not a female and likely a male under 45.
Re: "Knife deaths are the third most common murder weapon and far less than hand guns." Thought I would look this up. I did not know that homicides in the US in 2021 were 12x more likely to be committed by guns (of all types) than a knife:
1. Handguns - 6,012
2. Firearms, not defined - 4,740
3. Knives or cutting instruments - 1,035
4. Personal weapons (hands, etc,) - 461
5. Rifles - 447
6. Other guns - 277
7. Blunt objects - 243
8. Shotguns - 152
Source: Statista - Society›Crime & Law Enforcement
Murder victims by weapon used in the U.S 2021
Published by Statista Research Department, Oct 14, 2022
(I did not want to hotlink so as not to break the rules.)