JEFFERSON COUNTY, Tenn. — The Jefferson County Sheriff's Office is mourning the passing of a retired K-9, according to a post from the office.

JCSO said Nitro, was a "dedicated" explosive detection K-9, and thanked him for his service to Jefferson County and its citizens.

"With a heavy heart, we share the passing of retired K9 Nitro, who passed suddenly today," JCSO said on Monday. "We extend our deepest condolences to his handler, Lt Josh Rigsby, his family, and all those who knew and loved Nitro."

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