Who is Matt Lambert? Doctor identified as gunman in deadly gym shooting in ritzy DC neighborhood

Nov 12, 2026 - 16:30
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Who is Matt Lambert? Doctor identified as gunman in deadly gym shooting in ritzy DC neighborhood
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The gunman involved in Thursday's deadly gym shooting in Washington, D.C., has been identified by law enforcement as Dr. Matt Wade Lambert, who killed his building manager and injured four others after a feud with his homeowner's association over mold and maintenance problems.

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Lambert, 55, lived in an apartment in Northwest Washington, D.C., where he was found dead from a self-inflicted gunshot wound after the attack, police said.

Authorities said Lambert opened fire around 8 a.m. inside Vida gym in D.C.'s Logan Circle neighborhood. He killed building manager James Stewart, 46, and wounded two men and two women.

DC GYM SHOOTING KILLS 1, INJURES 4; GUNMAN DEAD, SOURCES SAY

The motive appeared to stem from Lambert's ongoing battle with the condo homeowner's association and building management over complaints about maintenance and mold, police said. That included a lawsuit filed by Lambert.

LISTEN: DC shooting dispatch audio reveals 30 people sheltered in gym basement as gunfire erupted

Less than 10 minutes before the first calls about the gunfire came in, according to the Associated Press, Lambert appeared to post "My manifesto is an engineering report" on an X account named "OfMiceandMold" with screenshots from that report.

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The photos show the dispute between Lambert and the Metropole Condominium Association over problems like "mold" and "water intrusion" issues.

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The account features numerous posts, photos and videos of alleged issues inside the apartment. In a post from the beginning of October, he called out his HOA for what he said were "months of 'Luigi' tactics" and mentioned submitting "an independent engineering report."

Fox News Digital has reached out to EJF Real Estate Services, the company that owns Lambert's apartment building, for comment. 

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The shooting is still under investigation.

Fox News' Alexandra Koch, Robert McGreevy and David Spunt contributed to this report.


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Fibis

I am just an average American. My teen years were in the late 70s and I participated in all that that decade offered. Started working young, too young. Then I joined the Army before I graduated High School. I spent 25 years in, mostly in Infantry units. Since then I've worked in information technology positions all at small family owned companies. At this rate I'll never be a tech millionaire. When I was young I rode horses as much as I could. I do believe I should have been a cowboy. I'm getting in the saddle again by taking riding lessons and see where it goes.

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