Six months after Nancy Guthrie disappeared from her Tucson home, the sheriff leading the investigation explained on Saturday why authorities recently released two purported ransom notes, saying investigators hope someone recognizes the writer’s distinctive language or phrasing.

“There are a number of pieces of information in these notes that just might jar someone to say, ‘You know, I’ve heard that,’ or the wording, the style of the writing,” Pima County Sheriff Chris Nanos said in the interview-style video.

It remains unclear if the notes were penned by the same sender.

Nanos said investigators remain actively reviewing tens of thousands of…

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