Killer’s note says he was bombarded by ultrasonic waves | The Sacramento Bee

https://www.sacbee.com/news/local/crime/article224472155.html

EXCERPT:

“The Davis Police department has been hitting me with ultra sonic waves meant to keep dogs from barking. I notified the press, internal affairs, and even the FBI about it. I am highly sensitive to its affect (sic) on my inner ear. I did my best to appease them, but they have continued for years and I can’t live this way anymore.”