Three Los Angeles County Sheriff’s Department deputies died last July in a blast triggered by a grenade that authorities initially believed was inactive, a newly surfaced legal claim alleges. The claim, filed by the widow of Deputy Victor Lemus, details a series of missteps and potential failures in training and equipment that contributed to the tragic incident. The incident, which occurred while the deputies were examining evidence recovered from a Santa Monica apartment, has prompted a wide-ranging investigation and raised serious questions about protocols for handling potentially explosive devices.
The legal claim, first reported by the Los Angeles Times, centers on the handling of two grenades discovered during a search warrant execution on Bay Street. Nancy Lemus asserts that the department failed to adequately train her husband and Deputies Joshua Kelley-Eklund and William Osborn, in the safe handling of explosives. The claim further alleges that an outdated x-ray machine provided a false reading, indicating the grenade was inert, leading to a fatal demonstration. This incident underscores the inherent risks faced by law enforcement personnel dealing with explosive ordnance and the critical importance of accurate assessment and rigorous safety procedures.
A government claim is a necessary step before a lawsuit can be filed against a public entity in California. The claim was filed in January but only recently came to light. The Sheriff’s Department confirmed it has received the claim but declined to comment on specifics, citing the ongoing investigation. “We remain committed to thoroughly understanding the circumstances of this tragic incident and ensuring the safety of our personnel,” the department stated in an emailed response Wednesday. “The Department continues to mourn the loss of our three Arson Explosive Detail Detectives and remains committed to supporting their colleagues and families.”
The Sequence of Events Leading to the Explosion
On July 18, 2025, the three deputies were tasked with examining the grenades recovered from a Santa Monica apartment. According to the claim, Deputy William Osborn utilized an older x-ray machine to assess the device. The machine, the claim alleges, incorrectly indicated the grenade was inert. Based on this assessment, Osborn transported the grenades back to a location where they were to be further examined, rather than rendering them safe on-site or transferring them to military explosive ordnance disposal experts. NBC Los Angeles reported on the initial investigation following the explosion.
The claim details that the deputies then proceeded to use what they believed was an inert grenade in a training exercise. During this demonstration, one of the deputies allegedly pulled the pin, triggering the detonation. The explosion resulted in the immediate deaths of Deputies Lemus, Kelley-Eklund, and Osborn. The loss sent shockwaves through the Los Angeles County Sheriff’s Department and the wider community.
Questions Raised About Training and Equipment
The core of Nancy Lemus’ claim rests on allegations of inadequate training and the unreliability of the department’s equipment. The claim specifically points to the x-ray machine as a critical point of failure. The use of older technology in such a sensitive area raises concerns about the department’s commitment to providing its personnel with the tools necessary to safely handle potentially dangerous materials.
Beyond the x-ray machine, the claim also questions the level of training provided to the deputies regarding explosive ordnance. Proper identification, handling, and disposal procedures are paramount when dealing with such devices, and the claim suggests that the deputies were not adequately prepared for the task they were assigned. This raises broader questions about the department’s protocols for specialized units like the Arson Explosive Detail.
The Search for the Second Grenade and Ongoing Investigation
Adding another layer of complexity to the case, a second grenade recovered from the Santa Monica apartment remains unaccounted for. Authorities have been unable to locate the device, despite extensive searches of the blast site, the deputies’ vehicles, and their homes. The whereabouts of the second grenade remain a key focus of the ongoing investigation.
The investigation is being led by the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF), with support from the Sheriff’s Department’s Homicide Bureau. According to the Sheriff’s Department, investigators are working to determine the origin and cause of the explosion, as well as to locate the missing grenade. Several law enforcement sources, speaking on condition of anonymity, have reportedly confirmed that the findings of the ATF investigation align with the assertions made in the legal claim.
“Sheriff’s Homicide investigators are continuing their death investigation of our Arson Explosive Detail Detectives, and the ATF has the lead on the post-blast investigation to determine the origin and cause of the explosion and the whereabouts of the second device,” the department stated.
The incident highlights the dangers inherent in law enforcement work, particularly for specialized units dealing with hazardous materials. The investigation’s findings will likely have significant implications for training protocols, equipment standards, and operational procedures within the Los Angeles County Sheriff’s Department and potentially other agencies nationwide.
The next step in this case will be the Sheriff’s Department’s response to the legal claim. The department has a limited time to respond before a lawsuit can be filed. The outcome of this case could lead to significant changes in how law enforcement agencies handle explosive devices and prioritize the safety of their personnel.
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