DENVER — A man convicted in a Teller County court for killing two of his roommate’s dogs, dismembering one of them, in 2020, is now wanted in connection with an Arizona murder.

Matthew Dieringer, 35, is accused of killing Frank Quaranta , 67, inside the victim’s Scottsdale, Arizona home on Labor Day.

Police did not say how Quaranta died.

On July 26, 2020, Arapahoe County Sheriff’s deputies arrested Dieringer at a Days Inn in Centennial on animal cruelty charges after the incident related to his former roommate’s two dogs, a 7-year-old Australian cattle dog “Suka” and a black dog named “Hayoka.”

Dieringer was convicted in 2023 of felony animal cruelty and sentenced to 18 months in prison, following multiple mental health competency hearings, according to records pulled by Denver7.

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