FOX NEWS: Cop killer claimed in note police targeted him with 'ultra sonic waves meant to keep dogs from barking'

Cop killer claimed in note police targeted him with 'ultra sonic waves meant to keep dogs from barking'



The man who killed Officer Natalie Corona in an “ambush”-style attack left a note in the apartment where he killed himself, claiming that police had targeted him with “ultra sonic waves meant to keep dogs from barking.”