Update: Levandowski has been found safe as of 11 a.m. Monday.
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A Sliver Alert has been issued for a missing Marathon County man.
81-year-old Norbert Levandowski was last seen leaving his Mosinee home on foot Sunday afternoon.
He was wearing a blue denim shirt and blue jeans. He is 5’9” and weighs 167lbs.
Norbert is developmentally delayed and has dementia.
He's known to be interested in ponds and water.
Anyone with information should contact the Marathon County Sheriff's Office at 715-261-1200.