SILVER CITY, N.M. (AP) — New Mexico State Police have launched an air and ground search in the Gila National Forest for a 58-year-old Boulder man who never returned from a run Tuesday.

Police spokesman Robert McDonald said about 18 people on foot and horseback along with three aircraft were involved in the search Thursday for Micah True.

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McDonald said the operator of the hotel where True was staying discovered him missing after going to check on his dog.

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“That’s the only reason they knew he was missing — he left his dog behind,” McDonald said. “He usually takes his dog but his dog was sore” from a rigorous run the day before.

McDonald said searchers were concerned because it still gets quite cold at night in the mountains and True was last seen in shorts and a T-shirt.

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