One person was killed and four others were injured in a shooting at a gym in Washington, D.C., on Thursday, November 12, 2026, according to police cited by Fox News. Authorities identified the gunman as Dr. Matt Wade Lambert, 55, who was later found dead in his nearby apartment in Northwest Washington, D.C., from a self-inflicted gunshot wound, authorities said.
Police said Lambert opened fire around 8 a.m. inside Vida gym in the Logan Circle neighborhood. James Stewart, 46, identified as Lambert’s building manager, was killed. Two men and two women were wounded. The report did not provide details about their medical conditions or describe their connections to the gunman.
Investigators said the apparent motive involved an ongoing dispute between Lambert and his condominium association and building management over maintenance complaints, including mold and water intrusion. Lambert had also filed a lawsuit related to the dispute. The investigation remained ongoing, and police characterized the dispute as the shooting’s apparent motive.
According to the Associated Press, as cited in the report, an X account named “OfMiceandMold” appeared to publish a post less than 10 minutes before the first emergency calls about the shooting. The post stated, “My manifesto is an engineering report,” and included screenshots concerning the condominium association and maintenance.
The account also contained numerous posts, photographs and videos documenting what it described as problems inside Lambert’s apartment. An early October post criticized the homeowners association and referred to an independent engineering report. The materials reflected Lambert’s allegations; the article did not independently establish the accuracy of those maintenance claims.
Fox News said it had contacted EJF Real Estate Services for comment. No response was included in the report. Questions about the circumstances of the attack and the relationship between the housing dispute and the shooting remained under police investigation.