Officer’s killer said police hit him with sound waves

DAVIS, Calif. — The man who shot and killed a rookie California police officer left a letter on the bed in the home where he lived claiming police bombarded him with ultrasonic waves, officials said.

Police in the college town of Davis near Sacramento on Saturday made public the one-paragraph letter they said was written by Kevin Douglas Limbaugh, 48.

He killed himself Thursday after fatally shooting Officer Natalie Corona.

“The Davis Police department has been hitting me with ultra sonic (sic) waves meant to keep dogs from barking,” the letter said. “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.”