DC Doctor Identified as Gunman After HOA Dispute Turns Deadly

WHO:

NY Post - The victim was building manager James Stuart, 46.

NY Post - Lambert’s attorney said Lambert was doing “very well” before the shooting.

The Washington Post - Matt Lambert was 55.

NY Post - The victim was identified as Stuart.

Fox News - Dr. Matt Lambert was identified as the gunman in the deadly attack.

Newsweek - Dr. Matt Lambert was identified as the suspect in the deadly shooting.

NY Post - Lambert was an emergency room doctor.

NY Post - The Metropole Condominium Association was the organization Lambert sued.

WHAT:

NY Post - One of the four wounded people remained in critical condition.

NY Post - Lambert planned to start a new job the following week.

The Washington Post - The shooting killed one person and wounded four others.

NY Post - Lambert used a handgun to kill Stuart.

NY Post - The article said Lambert invoked a slogan inscribed on Luigi Mangione’s bullets.

TMZ - The shooter killed one person and then himself.

NY Post - Lambert had sued the Metropole Condominium Association in March 2025.

Fox News - Lambert allegedly posted a manifesto referencing an engineering report shortly before the deadly shooting.

Newsweek - The shooting was a deadly attack at a Washington, D.C., gym.

NY Post - Lambert sued the Metropole Condominium Association over black mold in his apartment.

NY Post - The article described Lambert’s apartment as worth $1.1 million.

WHERE:

NY Post - The shooting took place inside the building’s ground-floor gym in the Logan Square neighborhood.

Fox News - The shooting took place at the VIDA gym in Logan Circle.

Newsweek - The shooting took place at a gym in Washington, D.C.

NY Post - Lambert’s apartment was in the Metropole condominium.

WHEN:

NY Post - The shooting occurred just after 8 a.m.

WHY:

The Washington Post - Interim D.C. police chief Jeffery Carroll said Lambert’s long-running disputes with his condo building’s management were believed to have prompted the attack.

NY Post - The lawsuit concerned black mold in Lambert’s apartment.

NY Post - The headline characterized Lambert as having “went berserk” at the homeowners association over the mold.

HOW:

NY Post - Lambert made a comment about Stuart’s routine before the shooting.

Fox News - The manifesto was allegedly posted minutes before the shooting and referenced an engineering report.

(UPDATED November 13, 2026 02:00 UTC)

An emergency room doctor killed building manager James Stuart and wounded four others at a Washington gym. Suspect Matt Lambert then killed himself; one wounded person remained in critical condition. Police believe Lambert’s long-running dispute with his condominium association over mold prompted the attack.

(UPDATED November 13, 2026 01:07 UTC)

An emergency-room doctor killed one person and wounded four at a Washington gym, then died by suicide. Police identified the gunman as Matt Lambert, who had sued his condominium association over black mold. Officials believe disputes with building management may have prompted the attack.

(UPDATED November 12, 2026 23:01 UTC)

Emergency room doctor Matt Lambert killed Stuart with a handgun at a Washington gym. Lambert then killed himself; authorities identified him as the gunman in the deadly shooting. He had sued his condominium association over black mold and allegedly posted a manifesto beforehand.

(UPDATED November 12, 2026 20:59 UTC)

Emergency room doctor Matt Lambert was identified as the gunman in a deadly Washington gym shooting. He allegedly posted a manifesto referencing an engineering report shortly before the attack. Lambert had sued his condominium association over black mold in his apartment.

(UPDATED November 12, 2026 20:04 UTC)