[03-04-2025] Los Angeles County, CA – One Killed, Multiple Injured After Multi-Vehicle Crash in Diamond Bar

One person was killed, and several others sustained injuries after a multi-vehicle crash in Diamond Bar early Tuesday morning, March 4, 2025.

According to the Los Angeles County Sheriff’s Department, the collision occurred at approximately 12:17 a.m. at the intersection of West Mission Boulevard and West Temple Avenue, east of the Orange (57) Freeway.

Emergency responders arrived to find multiple damaged vehicles, including one that had been split in half due to the impact. One person was pronounced dead at the scene by Los Angeles County Fire Department paramedics.

At least one other person was transported to a hospital in an unknown condition. Reports indicate that multiple individuals sustained injuries, but their conditions were not immediately available.

The Los Angeles County Sheriff’s Department is leading the investigation into the crash.

Contact Our Trusted Car Accident Lawyers In Diamond Bar, CA

A car accident can leave you dealing with medical expenses, lost income, and emotional distress. If you or a loved one has been injured due to someone else’s negligence, having experienced legal representation is crucial. At Arash Law, our dedicated personal injury attorneys, led by Arash Khorsandi, Esq., are committed to helping you recover the compensation you deserve.

Our Diamond Bar car accident lawyers will guide you through every step of the legal process, ensuring your rights are protected. We will thoroughly investigate your case, handle negotiations with insurance companies, and fight for the maximum settlement available.

With a proven record of success and over $500 million recovered for accident victims, our firm has earned a strong reputation for achieving results. Let us take care of the legal complexities so you can focus on your recovery.

Call (888) 488-1391 today or fill out our “Do I Have a Case?” form to discuss your case with our legal team.

What To Do After A Car Accident In Diamond Bar, CA

A car accident can be a stressful and confusing experience, leaving victims unsure of what to do next. To protect your health and legal rights, it’s important to remain calm and take the necessary steps. If you are able, follow these actions to safeguard yourself and your claim:

1. Prioritize Your Health — One of the most important steps after a collision is to check yourself and others for injuries. If anyone has injuries, call 911 to seek medical attention. Even if you feel fine, consult a medical professional, as some injuries may not be apparent right away.
2. Move To A Safe Location — If you can, park your vehicle on the side of the road to avoid further accidents or traffic disruptions. Turn on your hazard lights to alert other drivers to the situation. Do not leave the scene, or you might be held liable for hit-and-run.
3. Collect Strong Evidence — Take photos and videos of the accident scene, including the vehicles involved, injuries sustained, and relevant road conditions. You may also request witnesses to provide testimony to the police at the scene.
4. Report The Accident To Your Insurance Company — Provide the facts, like the time, date, and location. However, avoid admitting fault or providing more information than necessary. Details you disclose could be used against you later.
5. Reach Out To Arash Law — Our car accident lawyers in Diamond Bar can guide you through the next steps of filing a personal injury claim. Let’s discuss your case in a free initial consultation by calling us at (888) 488-1391 today.

I HAD AN ACCIDENT

Car Accident Statistics

Car accidents claim thousands of lives across California each year. According to the Office of Traffic Safety (OTS), there were 3,847 traffic-related fatalities in 2020, reflecting a 3.4% increase from 3,719 deaths in 2019.

Drunk driving played a significant role in these accidents, with 1,159 fatalities linked to alcohol-impaired driving—a 20% rise from 966 cases in 2019. Alcohol-related crashes accounted for 30% of all traffic deaths, with the fatality rate climbing by 4%.

Additionally, the number of fatal accident victims testing positive for legal or illegal substances increased from 51% in 2019 to 55% in 2020, marking a 7.8% rise.

These statistics highlight the dangers drivers face on California roads. If you or a loved one has been injured in a car accident, seek legal guidance to protect your rights and pursue the compensation you deserve.