UPDATE 10:38 p.m.: Fremont County deputies say Lutz has been located and is safe.
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Fremont County, Iowa, deputies are asking for help locating a missing teenager.
Joshua Michael Brace Lutz, 16, of Sidney, Iowa, was last seen around 6 p.m. Sunday.
He was wearing American flag swim trunks and was not wearing shoes or a shirt when he was last seen.
Joshua is 5 feet, 6 inches tall, with an average build and dark blonde hair.
Anyone with information should call the Fremont County Sheriff's Office at 712-374-2424.