People in Boyle Heights were ordered to stay indoors after fire broke out at a commercial building on Wednesday, June 17, 2026. (Alejandra Molina / Boyle Heights Beat)

A fire at a Boyle Heights commercial building sent up a massive plume of black smoke on Wednesday and prompted a shelter-in-place order due to hazardous materials, including ammonia.

Fire broke out around 2:35 p.m. at a 1,000-foot by 500-foot cold storage facility at 1400 S. Los Palos St. with solar panels on the roof, according to the Los Angeles Fire Department. The fire reached an ammonia line, officials said, prompting firefighters to pull back as it started off-gassing and order people nearby to shelter in place.

The ammonia is not toxic to individuals unless they have respiratory issues or come into direct contact with it, LAFD Chief Jaime Moore said. Adjacent structures were evacuated to keep people from breathing in the ammonia that was in the air, and firefighters pivoted to using water drops from helicopters to take on the flames as they spread across the building’s rooftop solar panels “almost like a brush fire would,” he said.

“Get inside IMMEDIATELY and close all windows and doors. Turn off air conditioning/heating. Bring all people and pets to an inside room until you receive more instructions,” an LAFD alert said.

The pink zone marks the shelter-in-place order in effect Wednesday afternoon.

The shelter-in-place order was in effect for the area south of Interstate 5, east of Soto Street, north of Washington Boulevard and west of Indiana Street. As of 5:30 p.m. Wednesday, LAFD Capt. Anthony Tubbs said officials did not know when it would be lifted.

East Yard Communities for Environmental Justice urged people outside the shelter-in-place boundaries to also take precautions.

“The 5 freeway is not an air filter. The smoke is spreading and everyone in adjacent neighborhoods should reduce the risk of smoke exposure ASAP,” the organization wrote in an Instagram post.

By 4 p.m., authorities added a smoke advisory covering East LA, Commerce and parts of downtown. Heavy, black smoke was visible across the region.

The water drops via helicopter were helping to get the fire under control by Wednesday evening. Authorities planned to use an LAFD robot to get inside and assess the building, Moore said.

“This is a very unique situation because of the size of the building,” he added.

LAFD personnel and helicopters responded to the scene on Wednesday. (Alejandra Molina / Boyle Heights Beat)

The business at 1400 Los Palos is called Lineage, a logistics company that offers cold storage services, according to the company’s website.

According to LAFD firefighter Jennifer Middleton, over 120 firefighters were on scene battling the blaze. Air quality was being monitored in the area, Middleton said.

“Any sort of structure fire with [solar] panels burning, there’s going to be some sort of hazardous materials in the air,” Middleton said.

No injuries have been reported, she added, but she also urged people to stay inside if smoke was reaching their area.

“Close your windows, stay indoors, turn off your air conditioning, and just shelter in place. We don’t want anyone breathing that smoke. And don’t go outside to watch the fire,” Middleton said. “If need be, you can leave the area to more clear air.”

Local organizations including Neighborhood Music, Centro CSO and Plaza de la Raza announced on social media they were either canceling classes and meetings or moving them online.

In a statement, District 14 Councilmember Ysabel Jurado said her office was monitoring the situation.

“Right now, the most important thing is to follow the shelter-in-place order that has been issued because of the smoke,” Jurado said. “Residents should stay indoors, keep windows and doors closed, avoid unnecessary travel in the area, and follow instructions from first responders.”

Mayor Karen Bass also urged people to stay inside.

“I urge everyone in the impacted area to get indoors immediately, close windows and doors, turn off air conditioning, and avoid unnecessary travel to the area,” she said. “I want to thank the brave LAFD and public safety personnel who responded quickly and remain on scene.”

Officials in the neighboring city of Maywood also urged people to stay away from the area.

My background: I’m originally from Fontana in the Inland Empire and have spent most of my career covering local news for Latino communities in Los Angeles. Most recently, I led coverage of the historic 2024 Latino vote in Nevada as editor of the Las Vegas Review-Journal en Español. Before that, I was the Bilingual Communities Reporter at the Long Beach Post, getting to know the city’s vibrant Spanish-speaking communities.

What I do: I cover topics that will help residents in Boyle Heights and East LA navigate and understand the issues they encounter in their everyday lives while also seeing themselves reflected in the stories we spotlight.

Why LA?: I have vivid memories of visiting El Mercadito in Boyle Heights with my family and indulging in gorditas, esquites and nieves de limón before our hour-long drives back to the IE. The struggles of underserved communities are felt across county borders and I’m eager to report on a community that reminds me of home.

The best way to contact me: My email is laura@boyleheightsbeat.org.

My background: I was part of the team that launched De Los, a new section of the Los Angeles Times exploring Latino identity. I’ve been a local reporter for The Press-Enterprise in Riverside, The San Gabriel Valley Tribune, and The Orange County Register. You can find my writing on religion, food, and culture in The Atlantic, Eater, the Associated Press, the Washington Post, and Religion News Service. My upbringing spans South Central, El Monte, and Pomona.

What I do: A Report for America corps member, I write about how decisions surrounding immigration, city hall, schools, health, religion and culture impact Boyle Heights and East LA. I do this by spending time with residents and community members, reaching out to civic and elected leaders, and by analyzing related research. I've also mentored Boyle Heights Beat youth journalists.

Why LA: It’s where I’m from. Reporting and living here means appreciating the different neighborhood identities that make up LA. Also, nothing beats walking along the LA River, hiking at Debs Park, or catching a sunset while running on the Sixth Street Bridge in Boyle Heights.

The best way to contact me: My email is alejandra.molina@boyleheightsbeat.org.

My background: I worked as a reporter and editor in the LA offices of BuzzFeed News and HuffPost for 10 years, covering breaking news, internet culture, criminal justice and more. Before that, I covered breaking news and communities in Orange County.

What I do: I work to plan coverage with our neighborhood news teams in Koreatown, Pico Union and Westlake, Boyle Heights and Inglewood and South LA. We aim to highlight the people who live in these communities and examine the issues affecting their lives, like housing, transportation and immigration. We also hold accountable local institutions, like city governments, law enforcement and schools.

Why LA?: Food, music, nature: Whatever you love, LA has the best.

The best way to contact me: claudia@thelalocal.org

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