ORANGE COUNTY ( — The Orange County Sheriff’s Department asked Monday for the public’s help in locating a man in his 70s.

Arnaldo Alvarez, who is also known as Nado, was last seen shortly before 5 p.m. Nov. 9 at his residence in the 23000 block of Via Chiripa in Mission Viejo.

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Deputies said Alvarez drove his red 2009 Toyota Camry to the Costco in Laguna Niguel but never returned home. The vehicle has license plate No. 6GIE047.

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Alvarez is 5-foot-6 and weighs 180 pounds. He has gray hair and brown eyes. He was last seen wearing blue jeans and a sweater.

Deputies said Alvarez takes daily medication and left home without it. He may be in need of medical attention.

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Anyone with information as to Alvarez’s whereabouts was asked to call Sheriff’s Department investigators at (714) 647-7055 or dispatch at (714) 647-7000.