Feds Raid Southern California Facility Where Chemical Threat Prompted Mass Evacuation

Interesting california, chemical, epa, fbi, orange county, search warrant admin June 10, 2026 0 Comments

Feds Raid Southern California Facility Where Chemical Threat Prompted Mass Evacuation

Federal officials raided a Southern California GKN Aerospace facility Wednesday, investigating a toxic chemical leak that threatened an explosion and resulted in a massive evacuation last month.

The Federal Bureau of Investigation (FBI) and Environmental Protection Agency (EPA) served the federal search warrant, a spokesperson from the FBI Los Angeles Field Office told the Daily Caller. The warrant authorized officials to seize any evidence of violation of a section of Title 42 that outlines a “general duty to prevent accidental release of extremely hazardous substance into the ambient air,” according to the warrant obtained by the Daily Caller.

The warrant, approved by a federal judge last Thursday, specifically authorized the seizure of documents or records related to the “treatment, storage, disposal, and transportation” of methyl methacrylate, the toxic and flammable chemical contained in the leaking tank last month. (RELATED: Chemical Tank Suffers Deadly Rupture In ‘Mass Casualty Scene,’ Officials Say)

Officials were cleared to seize “samples of the substance within any tank, tote, drum, vat, vessel, or container suspected of containing or having previously contained methyl methacrylate and/or any hazardous substance,” according to the warrant viewed by the Daily Caller.

The warrant also allowed officials to obtain records related to GKN’s risk analyses and the safety and cooling equipment used with methyl methacrylate. It asked for documents referencing the supervisors responsible for handling and managing this chemical.

The FBI Los Angeles Field Office said the investigation was ongoing but declined to provide further comment.

Orange County firefighters rushed to a Garden Grove GKN Aerospace facility May 21 after a 34,000-gallon tank containing methyl methacrylate began heating up and emitting vapors through its safety release valve, according to Orange County Fire Authority (OCFA). OCFA called it “a unique hazmat incident” as the event unfolded.

Authorities expressed fears about an explosion, and 50,000 residents were evacuated, according to the Associated Press (AP). A crack accidentally formed in the tank, relieving pressure and stopping a possible explosion. This allowed most residents to return home over Memorial Day weekend, the AP reported.

GARDEN GROVE, CALIFORNIA – MAY 26: Garden Grove police officers block Orangewood Avenue on May 26, 2026 in Garden Grove, California. (Photo by Justin Sullivan/Getty Images)

GKN Aerospace, a global business based in the United Kingdom, makes parts for commercial and military aircraft. “We are cooperating with authorities at our Garden Grove facility and will continue to do so,” GKN told the AP Wednesday when asked for comment about the FBI raid.

Steve Carlin, GKN senior vice-president, thanked first responders and apologized to the community in a community meeting Tuesday, according to The Guardian.

“On behalf of GKN and the Garden Grove plant, I want to say that I’m sorry that this event and this incident occurred. I understand, and I realized sitting here tonight what a disruptive event it was and how unsettling it is to the greater community. Particularly unsettling to us at GKN because of the long history that we have with Garden Grove and how connected we are to this community,” Carlin said, according to The Guardian.

Residents and city leaders asked GKN to move the methyl methacrylate tanks at the meeting. Carlin responded by saying it was too early in the investigation for the company to act on that request.

The Orange County District Attorney’s (DA) Office has initiated a separate criminal investigation into the plant, DA spokesperson Kimberly Edds told AP.

“We have sent a preservation letter to GKN directing them not to modify or destroy any evidence, which the company’s outside counsel confirmed receipt,” Edds wrote in an email to the AP.

Over 40 lawsuits have been filed against GKN since the incident, according to the Orange County Register. Residents have reported headaches, dizziness, intense odors and respiratory irritation.