UPDATE: The Silver Alert for Fisher has been discontinued as of 5 p.m. Sunday.

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Police in Harris County are on the lookout for Robert Emanuel Fisher, a 78-year-old man who was last seen at 1 p.m. Sunday afternoon at 16115 Cranwood Dr. in Spring.

Fisher was last seen wearing polo shirt, tan shorts, brown flip flops with a class ring and glasses. He was driving a Beige, 2007 Hyundai Santa Fe with the Texas license plate number CRJ8117.

Officers believe that Fisher's disappearance poses a threat to his own health and safety, as he has been diagnosed with a cognitive impairment.

If you or anyone you know has any information regarding Fisher's disappearance, please contact the Harris County Precinct Constables Office at 281-376-3472.