On the afternoon of Wednesday, June 10, 2026, a two-vehicle collision on West Warm Springs Road near Montessouri Street in southwest Las Vegas resulted in one fatality. According to the Las Vegas Metropolitan Police Department, a 2020 Toyota Sienna traveled eastbound before crossing into westbound lanes, resulting in a collision with a 2021 Tesla Model Y. The rear passenger of the Toyota, a 33-year-old woman, was transported to University Medical Center’s Trauma Center and later died from her injuries, marking the 53rd traffic-related fatality in LVMPD’s jurisdiction for 2026. The Toyota’s driver, 73-year-old Calvin Hayashi of Las Vegas, was determined to be impaired and booked into the Clark County Detention Center.
Court records indicate Hayashi faces charges of felony DUI resulting in death and misdemeanor failure to drive on the correct side of the street. From a legal standpoint, these reported facts may raise significant questions about impairment liability, wrongful death claims, and available insurance coverage, areas that our personal injury practice at the Brian Boyer Injury Firm handles regularly. The collision remains under investigation, and final fault findings may depend on the full Metro report and preserved video.
Reported Details and What They May Mean for Your Claim
Based on what law enforcement and news sources have reported, the key facts in this collision include:
- A head-on style collision occurred on West Warm Springs Road west of Montessouri Street in southwest Las Vegas on Wednesday, June 10, 2026
- A 2020 Toyota Sienna traveling eastbound crossed into the westbound lanes, and then began veering back into the eastbound lanes as the Tesla attempted to avoid it, the two vehicles collided and came to rest in the roadway
- The Toyota’s driver, Calvin Hayashi (age 73), was determined to be impaired at the scene and booked into the Clark County Detention Center on felony DUI resulting in death and misdemeanor failure to drive on the correct side of the street, according to news reports
- The rear passenger of the Toyota, later identified by the Clark County Coroner’s Office as 33-year-old Loreta Hayashi of Las Vegas, was transported to UMC’s Trauma Center and died hours later after her condition rapidly deteriorated
- A front passenger in the Toyota, Iris Hayashi (age 59), and the Tesla’s driver, 24-year-old Kyleigh Ancheta, each sustained minor injuries; the Tesla’s driver was not impaired
- Witness statements, video surveillance, and physical evidence at the scene were referenced in the official LVMPD report; the LVMPD Collision Investigation Section did not initially respond due to the passenger’s reported stable condition at the time
These reported facts may indicate several significant legal issues, including the potential liability of an allegedly impaired driver who crossed into oncoming traffic, the rights of the deceased passenger’s surviving family under Nevada’s wrongful death statute, and the coverage available through the at-fault driver’s liability insurance. A lawyer would investigate whether the reported facts support a claim for negligence and, depending on later-developed facts, whether the conduct meets the bar for punitive damages under Nevada law.
Preliminary news reports may not contain final police findings. A lawyer would seek the official Las Vegas Metro crash report for complete details. Key records in this type of case typically include the police crash report and diagram, 911 and dispatch recordings, scene photographs, toxicology results tied to the DUI arrest, medical records from UMC’s Trauma Center, and any traffic camera or business surveillance footage captured near the Montessouri Street area. Crash report diagrams can show point of impact, which is critical in confirming lane positions and right-of-way. Toxicology results, obtained through the arrest process, may be especially significant because they may help establish the degree of impairment at the time of the collision.
Legal Issues in DUI and Wrong-Way Crashes Under Nevada Law
Investigators will determine the exact cause of this crash. The following is a general overview of how Nevada law applies to this type of accident.
Nevada law prohibits driving under the influence of alcohol or drugs under NRS 484C.110. When a driver is arrested for DUI and a death results, felony charges may follow, as court records reportedly reflect in this case. A DUI arrest or citation is strong evidence of negligence in a civil personal injury or wrongful death claim. Depending on later-developed facts, a lawyer may also examine whether the conduct supports a claim for punitive damages under NRS 42.005, which allows such awards when a defendant is found to have acted with oppression, fraud, or malice, though this is a high bar and will depend on what the full investigation reveals.
The reported crossing into oncoming lanes may also raise questions under Nevada traffic law regarding the duty to maintain proper lane position. A lawyer would examine the police report and any available surveillance footage to better understand the sequence of events leading up to the lane departure. When an at-fault driver crosses the centerline and causes a collision, that fact pattern can be highly relevant to how fault is assessed in a civil claim.
Nevada follows a modified comparative negligence rule under NRS 41.141. Generally, an injured person or their estate may recover so long as their fault is not greater than the negligence of the party or parties against whom recovery is sought. Any recovery is reduced by the claimant’s percentage of fault. In this reported incident, there is no indication that the Tesla’s driver or the deceased passenger contributed to the crash, but a full legal investigation would confirm those facts.
Wrongful death claims in Nevada are governed by NRS 41.085. Eligible claimants may include the deceased person’s spouse, children, or parents, depending on the circumstances. A Las Vegas wrongful death lawyer would examine who may have standing to bring a claim, what economic and non-economic damages may be recoverable, and whether any coverage disputes need to be resolved before a claim can proceed.
Under NRS 11.190(4)(d) and (e), both personal injury and wrongful death claims generally carry a two-year statute of limitations from the date of the crash or death. Missing that deadline permanently bars the claim, which is why prompt legal review matters, even when a criminal case is still pending.
How a Lawyer May Investigate a Fatal DUI Crash in Las Vegas
Serious injury and fatal crashes usually require a fast, thorough legal investigation.
- Obtain the official Las Vegas Metro crash report. This is typically the first step because it contains the responding officer’s diagram, witness contact information, and any citations or arrests noted at the scene. Given the DUI arrest, the report may also reference field sobriety test results and the basis for the impairment determination.
- Preserve surveillance and traffic camera footage. West Warm Springs Road is a busy corridor in southwest Las Vegas, and nearby businesses often maintain exterior cameras. Footage is frequently overwritten within days, sometimes as few as 3 to 7 days, so a lawyer would act immediately by sending a preservation letter to any likely source.
- Secure toxicology records tied to the arrest. In DUI cases, the results of any blood or breath tests administered to the arrested driver can become critical evidence in the civil case. A lawyer would monitor the criminal proceedings and request relevant records through appropriate legal channels.
- Collect Event Data Recorder (EDR) data from both vehicles. Modern vehicles like the 2020 Toyota Sienna and 2021 Tesla Model Y typically record speed, braking inputs, steering angle, and seatbelt status in the seconds before a collision. A lawyer would issue a spoliation letter to prevent this data from being lost if either vehicle is repaired or destroyed.
- Interview witnesses and obtain 911 recordings. The LVMPD report references witness statements and video surveillance. Locating those witnesses early, while memories are fresh, and obtaining the 911 call recording can help establish the timeline and conditions at the time of the crash.
- Identify all potentially available insurance coverage. A lawyer would review the at-fault driver’s auto liability policy, any household policies that may apply, and the injured parties’ own uninsured/underinsured motorist (UM/UIM) coverage under NRS 690B.020, in the event any coverage gaps arise.
Together, this evidence allows a lawyer to assess the full scope of liability, address any comparative fault arguments raised by insurers, and document the complete damages suffered by the deceased’s family, including medical expenses, lost income, funeral costs, and non-economic losses such as loss of companionship and emotional harm. When a criminal case is pending alongside a civil claim, the timing of civil discovery may require careful coordination.
Possible civil claims here may include wrongful death (on behalf of the deceased’s eligible survivors), personal injury claims for the other passengers who were injured, and negligence. Because a DUI arrest was reported, a lawyer would also evaluate whether punitive damages under NRS 42.005 may be worth pursuing depending on later-developed facts, though that analysis would depend on the full evidentiary record. For passengers seeking to understand their options, common car accident injuries and the path to recovery can vary significantly based on the severity of the crash and the available coverage.
How The Brian Boyer Injury Firm Helps Victims and Families in Las Vegas
If we were representing you or a family member affected by a crash like this one, an early priority would be protecting the civil claim before critical evidence disappears. That means preserving surveillance footage, requesting the crash report promptly, and making sure communications with any insurance company do not inadvertently harm the claim. Medical care comes first, but documenting injuries thoroughly from the beginning helps build a complete picture of damages later.
In fatal crash cases, the longer-term focus shifts to identifying surviving family members with legal standing, documenting economic losses like future income and financial support the deceased would have provided, and addressing non-economic harm including grief, loss of companionship, and emotional suffering. These elements can be substantial, and they require careful documentation to support a full recovery under Nevada law.
Even when fault seems clear based on reported facts, insurers may still raise disputes about coverage, the extent of damages, or the role of other parties. The Brian Boyer Injury Firm can help investigate potentially available policies, document injuries and future losses, and deal with insurers before important facts are lost. Some situations that initially appear straightforward can become more complex once the full Metro crash report is available, which is why having legal counsel early can make a meaningful difference.
Get Legal Help After a Las Vegas DUI Crash
Families and individuals in Las Vegas and Clark County who have been affected by a crash involving an allegedly impaired driver may have legal options worth evaluating. That is true even when a criminal case is underway, and even when fault appears to be assigned in a police report, civil claims are separate from criminal proceedings and carry different standards of proof.
The Brian Boyer Injury Firm offers free, confidential consultations with no fee unless there is a recovery. If you or a family member was injured or lost a loved one in a DUI-related crash in Las Vegas or Clark County, contact us today to discuss what legal options may be available.