Man dead after violent Lake Mathews altercation, shooting

LAKE MATHEWS, Calif. — Authorities say a property owner shot and killed a former resident during a violent altercation in the unincorporated community of Lake Mathews, south of Riverside and northwest of Perris, Thursday evening, Jan. 21.

Sheriff’s officials are calling the shooting, which happened in the 21000 block of Harford Park Lane, self-defense and no arrests have been made.

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Deputies from the Perris Sheriff’s Station were dispatched to the property shortly after 9 p.m., after receiving the report of subjects involved in an altercation, Riverside Sheriff’s Sergeant Richard Carroll later said of the deadly incident.

During the confrontation, the property owner was physically threatened by a former resident, since identified as 39-year-old, Ned Cornish, from Perris, according to Carroll.

As the confrontation escalated, the property owner “feared for their safety and their family’s safety and used a firearm against the assailant,” Carroll described.

When deputies arrived at the location they found Cornish suffering from a gunshot wound. Despite life-saving efforts, Cornish succumbed to his injury and passed away at the scene.

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Investigators from the Perris Station and Sheriff’s Central Homicide Unit have assumed the investigation.

“At this point, the shooting appears to have been done in self-defense, and no arrests have been made,” said Carroll.

The Sheriff’s investigation is ongoing and anyone with information is encouraged to contact Central Homicide Unit Investigator Juarez at (951) 955-2777. Callers can refer to incident file number PC210210074 and can remain anonymous.

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Contact the writer: [email protected]

Trevor Montgomery, 49, moved in 2017 to the Intermountain area of Shasta County from Riverside County and runs Riverside County News Source and Shasta County News Source. Additionally, he writes or has written for several other news organizations; including KRCR News Channel 7 and Mountain Echo in Shasta County, Riverside County based newspapers, Valley News, Valley Chronicle, Anza Valley Outlook, and Hemet & San Jacinto Chronicle; as well as Bonsall/Fallbrook Village News in San Diego County.

Trevor spent 10 years in the U.S. Army as an Orthopedic Specialist before joining the Riverside County Sheriff’s Department in 1998. He was medically retired after losing his leg, breaking his back, and suffering both spinal cord and brain injuries in an off-duty accident. (Click here to see segment of Discovery Channel documentary of Trevor’s accident.)

During his time with the sheriff’s department, Trevor worked at several different stations; including Robert Presley Detention Center, Southwest Station in Temecula, Hemet/Valle Vista Station, Ben Clark Public Safety Training Center, and Lake Elsinore Station; along with other locations.

Trevor’s assignments included Corrections, Patrol, DUI Enforcement, Boat and Personal Water-Craft based Lake Patrol, Off-Road Vehicle Enforcement, Problem Oriented Policing Team, and Personnel/Background Investigations. He finished his career while working as a Sex Crimes and Child Abuse Investigator and was a court-designated expert in child abuse and child sex-related crimes.

Trevor has been married for more than 30 years and was a foster parent to more than 60 children over 13 years. He is now an adoptive parent and his “fluid family” includes 13 children and 18 grandchildren.