Crews had been searching for Rosenthal, an experience hiker, after he did not return from a hike as planned on Sept. 24. Authorities said Rosenthal was first reported missing on Sunday afternoon.
The /*Culver City*/ resident is known for brokering deals to sell historic downtown office and industrial buildings for conversion into condominium or apartment buildings.
He also has a reputation for writing short, humorous poems and reading them aloud at public events.
The Associated Press contributed to this report.
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