The Brief

SCOTTSDALE, Ariz. - A tip from the community led to the arrest of a man accused of murdering his roommate in Scottsdale .

What we know:

Police say 35-year-old Matthew Dieringer was living with Frank Quaranta, 67, after they met at a church homeless outreach event.

The case began as a welfare check at Quaranta's home , where police found him dead from apparent blunt force trauma. Evidence at the scene pointed to Dieringer as the suspect.

Police received a tip that Dieringer was seen near 13th Street and Indian School Road in Phoenix. He was then arrested for a probation violation from a 2024 theft case.

"That was what the initial arrest was for," said Scottsdale Police Sgt. Allison Sempsis. "He was taken to our jail, and we served a search warrant for forensic evid

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