An 81-year-old Tooele man is behind bars without bail after allegedly calling 911 to report that he had killed his wife with a knife, only for responding officers to find her alive with multiple stab wounds. Donald Louis Arend was booked into the Tooele County Detention Center shortly after 1 a.m. on October 15 and was formally charged that afternoon with attempted aggravated murder, a first-degree felony.
According to Gephardt Daily, officers who responded to the home found a red-handled knife next to the bed near the victim. An arrest document cited by the outlet states that Arend told investigators he used the knife to stab his wife until she stopped screaming, and that he had been thinking about killing her for about a week before the attack. The document states that probable cause existed to believe Arend committed attempted murder.
Booking records reviewed by KSL.com add further detail to the timeline, confirming Arend was booked into the Tooele County jail just after 1 a.m. and charged that same afternoon. The station reports that police booking affidavits describe Arend calling dispatch to claim he had killed his wife, before officers arrived and found her alive. Her current condition has not been released.
What Arend Is Facing in Court
Under Utah Code, attempted murder or attempted aggravated murder is classified as a first-degree felony carrying a potential sentence of five years to life in prison, along with fines of up to $10,000, per the Utah State Legislature. Arend is currently held without bail in the Tooele County jail. Under Utah judicial standards, judges may order defendants held without bond when clear and convincing evidence shows a substantial risk of harm to victims or the public in violent felony cases, according to the Utah State Courts.
The arrest comes amid a documented statewide pattern of high-risk intimate partner violence cases. Utah law has required police officers since July 2023 to complete an 11-question Intimate Partner Violence Lethality Assessment Protocol during domestic violence calls, a measure designed to evaluate immediate danger to victims and connect them with support, per the Utah Statewide Information and Analysis Center. Between July 2023 and August 2025, officers statewide conducted more than 23,000 of these assessments, and 63% indicated a high potential for lethal violence, according to a report from WTSP.
A Broader Pattern in State Homicide Data
Intimate partner and domestic violence account for 22.7% of all homicides in Utah, with 85.9% of intimate partner homicide victims being female, according to data from the Utah Department of Health and Human Services. Tooele County residents fleeing intimate partner violence can access a confidential emergency shelter and 24-hour crisis hotline through the Pathways center, which merged with South Valley Services to expand shelter and legal advocacy in the area. The Tooele City Police Department also maintains system-based victim advocates who help crime victims with safety planning, protective order applications, and navigating the judicial process, according to Tooele County Government.
A Difficult Week for Tooele County
Arend's arrest lands in the middle of an unusually intense stretch of public-safety incidents in Tooele County. It came one day after six law enforcement officers from four local and state agencies discharged their weapons during a fatal pursuit and rollover crash near Erda, as Hoodline reported. It's also the latest in a string of serious local cases: in September, Tooele investigators charged local real estate agent Daniel Ruesga with murder after his girlfriend was found shot dead in her Tesla in the garage; her children were inside the house and heard the attack, in a case Hoodline covered in its piece on the real estate agent charged in that killing.
Key details remain unresolved, including the current medical condition of Arend's wife and the broader history between the couple leading up to the attack. It is not known whether a Lethality Assessment Protocol screening or any prior police intervention had occurred at the home before the stabbing.
