By GvilleTX Newsroom
The Oklahoma Highway Patrol issued a Silver Alert for Patricia Leftwich-Nguyen, 66, in a Marshall County case that may be seen by residents across the Texoma area, including Gainesville and Cooke County. The OHP alert said Leftwich-Nguyen was last seen Aug. 6, 2026, at a residence on Deborah Lane in Kingston, Oklahoma.
According to the OHP alert, the case was activated for the Marshall County Sheriff’s Office. OHP said Leftwich-Nguyen entered an older maroon Ford Bronco with a white man who had not been identified and was estimated to be 60 to 65 years old.
The alert said Leftwich-Nguyen did not have a phone with her. OHP also said she was believed to possibly have dementia.
The public record provided for the alert does not identify the man, give a license plate number for the Ford Bronco, or state where the vehicle was believed to be headed. It also does not list any confirmed sightings after the Deborah Lane location.
Oklahoma’s Silver Alert criteria are tied to findings by local law enforcement. The Oklahoma Department of Public Safety says a Silver Alert may be activated when a local agency receives notice of a missing senior citizen, verifies qualifying age or cognitive-condition information, determines that the disappearance presents a credible threat to the person’s health and safety, and has information available that may help recover the person safely.
The Oklahoma Senate said in 2009 that House Bill 2030 created a statewide Silver Alert for missing senior citizens over 60 when the person is believed to have dementia or another cognitive impairment, the person’s whereabouts are unknown, and local law enforcement determines that the disappearance creates a credible threat to the person’s safety and health.
For readers on the Texas side of Texoma, the Texas Department of Public Safety lists different criteria for its statewide Silver Alert network. Texas DPS says the missing person must be 65 or older or diagnosed with Alzheimer’s disease, must have a documented impaired mental condition, and the request must be made within 72 hours of the disappearance.
Texas DPS also says statewide missing-person alerts normally run for a maximum 24-hour activation period. Regional alert networks in Texas operate separately, according to DPS, and may use different criteria or alert types.
The OHP alert identified Patricia Leftwich-Nguyen, Marshall County, Kingston, and the older maroon Ford Bronco as the central information released in the case.
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