The Fulton County Sheriff’s Office Thursday was mourning the death of a K-9 deputy from cancer.

Deputy “Marco,” a 6-year-old Belgian Malinois assigned to Sgt. Corey Henry, was euthanized Wednesday after a veterinarian discovered inoperable cancer, according to sheriff’s spokeswoman Tracy Flanagan.

Marco was trained as an “all-patrol” dog, meaning he could detect the presence of illegal drugs, search for suspects and track, Flanagan said. When Henry and Marco became partners in 2009, they spent 13 weeks in training together before hitting the streets, she said.

Marco was well-respected for his high level of intelligence, persistence, training and disposition, Flanagan said.

“He gave 110% everyday on the job and was a loved member of Sgt. Henry’s family with whom he lived,” she said. “Marco’s sudden passing was a shock to the agency and he will be greatly missed.”

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Fulton DA Fani Willis (center) with Nathan J. Wade (right), the special prosecutor she hired to manage the Trump case and had a romantic relationship with, at a news conference announcing charges against President-elect Donald Trump and others in Atlanta, Aug. 14, 2023. Georgia’s Supreme Court on Tuesday, Sept. 16, 2025, upheld an appeals court's decision to disqualify Willis from the election interference case against Trump and his allies. (Kenny Holston/New York Times)

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