Scottsdale Police Seek Suspect Matthew Dieringer in Targeted Homicide

Scottsdale police are actively searching for 35-year-old Matthew Dieringer, who is wanted in connection with the targeted homicide of 67-year-old Frank Quaranta. Quaranta was found dead in his home near 68th Street and McDowell Road after failing to show up for work, prompting a welfare check on September 1. Dieringer, described as a 6-foot-3, 185-pound white man with blonde hair and blue eyes, has a history of homelessness and is known to be manipulative and charismatic, often befriending others to secure lodging. Authorities have warned the public not to approach Dieringer due to his dangerous nature and have urged anyone with information to contact 911 immediately or tip Scottsdale Police or Silent Witness, which offers anonymity and a potential cash reward for information leading to an arrest. Police continue to investigate the evidence collected at the crime scene and request community assistance in locating Dieringer to expedite his apprehension.