FREMONT (CBS SF) — A Czechoslovakian-born K-9 that served the Fremont Police Department has died, police said Friday.

K-9 Warco was found to have an autoimmune dysfunction on Feb. 24. He was rushed to the Ohlone Veterinary Clinic but died the same day.

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Fremont Police Department’s K-9 Supervisor Sgt. Jason Lambert said, “He was a super friendly dog.”

Lambert described Warco as both friendly and hardworking.

Warco was born on March 17, 2013, and joined the Fremont Police Department on June 26, 2014.

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He was certified in patrol, narcotics, and SWAT operations. He served Fremont police officers for more than a year and a half and participated in more than 100 incidents from patrol to street crimes to SWAT and major crimes.

Lambert said officers are heartbroken, especially because Warco is the second K-9 to die recently.

“They are family to us,” he said.

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