UPDATE: Benton was found safe in Texas.
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The Nebraska State Patrol has activated an Endangered Missing Advisory for Harold Benton, 79, of Alma, Nebraska.
The Harlan County Sheriff's Office said Benton, also known as Gene, is 5 foot 10 inches tall and weighs 225 pounds. He has brown hair and eyes.
Benton suffers from dementia and has medical conditions, so he needs his medication. He was last seen Monday at 9 a.m. and may be driving a red 2017 Dodge Ram 1500 pickup.
Anyone who sees Gene Benton should call 911 or the Harlan County Sheriff at 308-928-2147.