Man who killed California officer complained of ultrasonic waves

DAVIS, Calif. – Among the evidence recovered from the home of Kevin Limbaugh, who shot and killed a rookie police officer Natalie Corona, were two unregistered guns and a letter claiming police had been bombarding him with ultrasonic waves.

Limbaugh wrote police targeted him with ultrasonic waves for years, saying “I can’t live this way anymore.” A search of Limbaugh’s home revealed two hanguns.

The 22-year-old officer was slain as she investigated a car accident Thursday.