Kiersten Fabiani died 10 days after police found her critically injured beneath a pickup truck at a north Phoenix property.
PHOENIX, Ariz. — A 54-year-old man has been arrested on a first-degree murder charge after a woman found critically injured beneath a vehicle in a north Phoenix backyard died 10 days later, according to police and court records.
Anthony Keith Errigo Jr. is accused in the death of Kiersten Fabiani, 61, who was found shortly after 11 a.m. Oct. 8 near 40th Street and Greenway Road. Phoenix police initially responded to a report of an injured person and found Fabiani beneath a pickup truck in the backyard of a residence. She was unable to tell officers what had happened because of the severity of her injuries. Fabiani was taken to a hospital, where she remained on life support before dying Oct. 18. Authorities determined that her injuries were consistent with an assault and began investigating her death as a homicide.
Police announced Errigo’s arrest Oct. 20. He was booked on allegations of first-degree murder, aggravated assault and tampering with physical evidence. Court records cited by local news organizations show he was ordered held on a $1 million cash-only bond. The charges are allegations, and the case has not been adjudicated. Publicly available reports did not indicate that Errigo had entered a plea as of Wednesday.
Investigators said surveillance video and cellphone information helped them reconstruct what happened before Fabiani was found. According to court documents described by Arizona’s Family, Fabiani and Errigo were seen going into the backyard of the property. Investigators allege that Errigo later returned alone and used a garden hose to wash his hands and shoes. Police said blood was found in several areas of the property. Several other people were there at the time, but investigators said they did not witness the alleged assault.
Police allege that Errigo later told investigators that he and Fabiani had been in a fight and that he struck her several times, including with a vehicle jack stand. Authorities also allege that he discarded clothing he had been wearing and took steps to prevent investigators from tracking a cellphone. Those statements are described in court records and remain allegations in a pending criminal case. Investigators have not publicly established what led to the confrontation.
A prosecutor said during Errigo’s first court appearance that an autopsy determined Fabiani died from blunt-force trauma and that her death was ruled a homicide, according to Arizona’s Family. Authorities have described additional injuries but have not released a complete autopsy report publicly. Police initially had little information about what happened because Fabiani was unable to give investigators a statement after she was found.
Fabiani’s family told Arizona’s Family that Errigo was her boyfriend and that they had not known she was hospitalized on life support immediately after the incident. Her stepmother, Jackie Greenwood, said the family was heartbroken by her death. Family members said their last contact with Fabiani had been Oct. 6, two days before officers found her. Their comments came after police announced the arrest and released additional information from the investigation.
The arrest marked a significant change from the early stage of the case. On Oct. 19, Phoenix police said detectives were still working to identify and locate the person responsible for Fabiani’s injuries and asked the public for information. By the following day, authorities had announced Errigo’s arrest and the criminal allegations against him. Police have not publicly identified a motive, and some details about the events leading to the alleged assault remain unclear.
Errigo remained in custody as the case moved through Maricopa County’s court system. FOX 10 reported that court records listed another proceeding for Oct. 26. Prosecutors will have to prove the charges against him in court, and additional details about the evidence, the circumstances surrounding Fabiani’s death and the defense response may emerge as the case proceeds.
Author note: Last updated October 21, 2026.