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Matthew Dieringer, 35, is accused of killing of 67-year-old Frank Quaranta

“This was a very violent and horrific murder,” a Maricopa County prosecutor said at a hearing on Sunday, Sept. 7

He was convicted in 2023 of killing his roommate's dogs in Colorado

A man who was convicted of killing dogs in Colorado has been arrested on a murder charge in Arizona.

Matthew Dieringer, 35, is accused of murdering 67-year-old Frank Quaranta, who authorities say was murdered at his Scottsdale home in “a targeted attack,” per a Scottsdale Police Department press release.

At a Sunday, Sept. 8, hearing, a Maricopa County prosecutor alleged Dieringer “beat the victim to death.”

“This was a very violent and horrific murder,” the prosecutor said at the hearing. “There was a strong weight of

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