UPDATE: John Wolf has been found safe.
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WAUKESHA COUNTY -- A Silver Alert was issued for a 79-year-old man from Waukesha County Sunday night.
John Wolf went missing around noon Sunday.
He was believed to be in Manitowoc County Sunday evening, but has no reason to be in that area.
John is 6 feet tall and 220 pounds. He has balding brown hair and brown eyes.
He was last seen wearing a black hat, black jacket and blue jeans.
He drives a green 2011 Kia Soul like the one pictured above. His license plate number is 455-DTG.