Carol Ann Beall, 79, has been charged with first-degree murder in the death of her stepfather, William Reginald Sipfle, whose remains were discovered in the Arizona desert more than 50 years ago. She is also accused of living in his home and collecting his retirement benefits during that time.
Discovery of Cold Case Remains
Sipfle, 73 when he disappeared, went missing in 1975. His remains were later found at a waste transfer station in Pima County, but authorities were unable to identify them due to technological limitations at the time.
Advances in genealogy forensics helped investigators connect the remains to Sipfle in late 2025, providing long-awaited closure for his family.
Arrest and Charges
Beall was arrested on May 28, 2026, by the Pima County Sheriff’s Department (PCSD) and charged with first-degree murder. She made her first court appearance virtually from jail and is being held on $500,000 bond.
Prosecutors allege that Beall, a retired U.S. Postal Service employee, financially benefited from her stepfather’s death, using between $250,000 and $600,000 from his pension and Social Security benefits over the decades.
Investigation Details
Investigators discovered that Beall had worked at a local museum in the desert area where Sipfle’s remains were found. Authorities are continuing to investigate the circumstances surrounding his death.
Sheriff Chris Nanos emphasized the importance of forensic science in solving the decades-old case and providing closure for Sipfle’s family.
Family Response
The Sipfle family expressed relief at finally identifying their loved one. “We are relieved to have closure regarding the whereabouts of our grandfather, William Reginald Sipfle,” they said in a statement.
They also noted the emotional challenge of processing the circumstances around his death and revisiting painful memories of his disappearance.
