Man who killed officer left note on ultrasonic waves

The man who shot and killed a rookie California police officer left a letter in his home that claimed police had bombarded him with ultrasonic waves, officials said.

Police in the college town of Davis on Saturday made public the oneparagraph 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.”