On the afternoon of May 9, 2025, 46-year-old Kelly Ann Kilburg was shot multiple times at a residence on Lake Langlois Road NE in Carnation, Washington. A 911 call shortly before 2 p.m. captured arguing and gunfire and a caller saying they had someone at gunpoint. Deputies from the King County Sheriff’s Office found Kilburg with gunshot wounds to her abdomen and arm; she was taken to Harborview Medical Center in Seattle and died around 3:40 p.m. The medical examiner ruled the death a homicide from multiple gunshot wounds.

The man who placed the 911 call, 42-year-old Mitchell Brian Gaynor, was arrested at the scene and later charged with first-degree murder. Court documents state Gaynor believed Kilburg was his ex-girlfriend who had impersonated her after plastic surgery; Kilburg can be heard on the call trying to convince him of her identity. Investigators noted Gaynor appeared under the influence of an unknown substance and found multiple firearms, drug paraphernalia, and a crystalline substance resembling methamphetamine at the home. Prosecutors say one of the firearms used was a weapon previously confiscated after a 2023 domestic violence incident; a protection order required him to surrender guns then, but that order expired in October 2024 and the weapon was later returned.

If anyone knew Kelly, her movements that day, or has information about the case, please contact the investigating agency.