HOUSTON (KTRK) -- UPDATE: This Sliver Alert has been discontinued.
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The Jersey Village PD has issued a Silver Alert for a missing senior.
Harold John Turner has been diagnosed with a Cognitive Impairment and last seen at 11am on Monday in Jersey Village, TX.
He was wearing a lime green polo shirt, light colored pants and brown loafers.
Authorities say he was driving a silver, 2010 Lexus RX-350 with Texas license plate CD4K030.
The 77-year-old stands at 6'2", weighs 210 lbs and has gray hair and blue eyes.
Law enforcement officials believe this senior citizen's disappearance poses a credible threat to his own health and safety.
If you have any information regarding this missing senior citizen, contact the Jersey Village PD at 713-466-5824.