LAPD Sergeant Killed in 405 Freeway Multi-Vehicle Crash in Brentwood

  • Sean Chalaki
  • June 23, 2025
  • Blog, News
LAPD Sergeant Killed in 405 Freeway Multi-Vehicle Crash in Brentwood

Two Dead, Including LAPD Sergeant, in Multi-Vehicle Crash on 405 Freeway

A multi-vehicle collision on the southbound 405 Freeway in Brentwood early Monday morning resulted in the deaths of two people, including a Los Angeles Police Department (LAPD) sergeant. The incident has prompted a significant investigation by the California Highway Patrol (CHP) and has deeply impacted the Los Angeles community.

Incident Details

The CHP received a call reporting the crash at 1:58 a.m. The collision occurred on the southbound lanes of the 405 Freeway at Moraga Drive. Preliminary reports indicate that multiple vehicles were involved in the incident. One person was pronounced dead at the scene, and two others, including the LAPD sergeant, were transported to Ronald Reagan UCLA Medical Center for treatment. Tragically, the sergeant later succumbed to his injuries.

LAPD Sergeant Identified

At a news conference held outside the hospital, LAPD Chief Jim McDonnell identified the deceased officer as Sergeant Shiou Deng. Chief McDonnell described Sergeant Deng as a dedicated and caring member of the department, a “true leader” who served the LAPD for over 26 years. Seventeen of those years were spent with the mental evaluation unit, and he was promoted to sergeant two years ago, assigned to the West LA division.

Chief McDonnell explained that Sergeant Deng was on the freeway when he encountered an initial collision. In an effort to protect those involved and slow down approaching traffic, Sergeant Deng activated his rear amber lights. Tragically, as he approached the scene, his vehicle was struck by another vehicle, resulting in fatal injuries.

“When I think about him, he died a hero. He was out there caring for others, putting their safety before his own,” Chief McDonnell stated, highlighting Sergeant Deng’s commitment to public service.

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Community Mourns Loss

The death of Sergeant Deng has been met with widespread grief and tributes from the LAPD and the Los Angeles community. A procession was held for Sergeant Deng, with officers from the LAPD following a Los Angeles County Coroner truck carrying his body.

Mayor Karen Bass issued a statement expressing condolences, saying, “This is a sad day for our city. The men and women of LAPD put their lives on the line for Angelenos each and every day.” She ordered that American flags above city buildings be lowered to half-staff in Sergeant Deng’s honor.

The LAPD also released a statement recognizing Sergeant Deng’s legacy: “As we mourn, we also mourn Sergeant Deng’s extraordinary legacy — a legacy defined by integrity, bravery, and an unwavering commitment to public service. His memory will forever live on in the hearts of those who knew him, served with him, and were protected by him.”

Traffic Impact and Investigation

Following the crash, the CHP issued a Sig Alert, closing all southbound lanes of the 405 Freeway at Moraga Drive. All northbound lanes remained open. The closure caused significant traffic delays throughout the morning commute. Drivers were urged to use alternate routes and exercise caution.

The CHP is conducting a thorough investigation into the circumstances surrounding the crash. This investigation will likely involve examining factors such as driver behavior, vehicle condition, road conditions, and visibility at the time of the incident. The investigation aims to determine the cause of the initial collision and the subsequent crash that claimed Sergeant Deng’s life.

Legal and Safety Implications

Multi-vehicle collisions, particularly those occurring on high-speed freeways, often present complex legal challenges. Determining liability in these cases requires a detailed understanding of the sequence of events, driver actions, and applicable traffic laws.

In situations where multiple vehicles are involved, fault can be attributed to one or more drivers, depending on the circumstances. Factors such as speeding, distracted driving, driving under the influence, and failure to maintain a safe following distance can all contribute to collisions.

The death of Sergeant Deng while attempting to assist at the scene of an accident underscores the inherent risks faced by law enforcement officers and other first responders. Their roles often require them to place themselves in harm’s way to protect the public.

From a personal injury perspective, this tragic incident highlights several important considerations:

  •   Duty of Care: All drivers have a legal duty to operate their vehicles safely and to avoid causing harm to others. This includes maintaining awareness of surrounding traffic, obeying traffic laws, and adjusting driving behavior to account for road conditions and visibility.
  •   Negligence: If a driver’s actions fall below the standard of care expected of a reasonable person, they may be considered negligent. Negligence can form the basis for a personal injury claim.
  •   Damages: In a wrongful death case, the surviving family members of the deceased may be entitled to recover damages, including compensation for loss of companionship, financial support, and funeral expenses.
  •   Insurance Coverage: Multiple insurance policies may be implicated in a multi-vehicle collision. Identifying all potential sources of coverage is crucial to ensuring that victims receive fair compensation for their losses.

This incident serves as a stark reminder of the importance of safe driving practices and the potential consequences of negligence on the road. It also highlights the sacrifices made by law enforcement officers in the service of their communities.

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Commentary from Gosuits Los Angeles, California Personal Injury Attorney

This tragic multi-vehicle collision on the 405 Freeway, resulting in the loss of two lives, including a dedicated LAPD sergeant, underscores the devastating consequences of traffic accidents. The investigation by the CHP will be critical in determining the factors that led to this incident and whether negligence played a role.

From a legal standpoint, multi-vehicle crashes can be incredibly complex. Establishing fault requires a thorough understanding of the sequence of events, witness statements, and accident reconstruction analysis. In cases like these, it’s important to consider all potential factors that might have contributed to the collision, including driver error, road conditions, and vehicle malfunctions.

Sergeant Deng’s actions, turning on his amber lights to protect others involved in an earlier collision, demonstrate the risks law enforcement officers face daily. While acting as a good samaritan, he became a victim himself. His death emphasizes the importance of being vigilant on the road, especially in emergency situations.

The families of both victims are now grappling with immense grief and loss. In addition to the emotional toll, they may face significant financial burdens, including medical expenses, funeral costs, and lost income. A seasoned personal injury attorney can help these families navigate the legal process, understand their rights, and pursue compensation for their losses. This compensation can help alleviate some of the financial stress during this difficult time and provide for their future needs.

It’s crucial for anyone involved in a serious car accident to seek legal counsel as soon as possible. An attorney can help protect their rights, conduct a thorough investigation, and ensure they receive fair treatment from insurance companies. While no amount of money can replace a loved one or undo the pain of an injury, obtaining just compensation can provide a measure of financial security and allow victims and their families to move forward.

Disclaimer

This article is provided solely for general informational and educational purposes. It is not intended as legal advice and should not be relied upon as such, particularly by individuals affected by the incident discussed. Reading this article does not create, nor is it intended to create, an attorney–client relationship.

An attorney–client relationship with our firm can only be established through the execution of a written contingency fee agreement signed by both the client and the law firm. If you are a victim of this incident, you should not interpret the information herein as legal advice. Instead, we strongly encourage you to contact an attorney of your choice to obtain a proper consultation tailored to your specific situation.

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Sean Chalaki - Principal/Founder of Gosuits.com

Sean Chalaki

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Sean Chalaki, is widely recognized as one of the best personal injury lawyers in Texas and California, known for his exceptional courtroom results, cutting-edge legal...

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