Deadly Washington Gym Shooting Linked to Bitter Condo Feud
Andrew Powell · Nov 12, 2026 · 2 min read
A doctor identified as the gunman in a deadly shooting at a Washington, D.C., gym reportedly had a lengthy dispute with his apartment building's homeowners' association, including complaints about mold and water damage.
According to Fox News, Dr. Matt Lambert was identified as the shooter by two law enforcement officials and another source familiar with the investigation, who spoke to The Associated Press on condition of anonymity.
The shooting happened around 8 a.m. Thursday inside Vida gym in the city's Logan Circle neighborhood. One person was killed, four others were wounded, and Lambert also died in the incident.
Investigators are examining Lambert's history of conflict with the management company overseeing his apartment building. According to the AP, he had filed a lawsuit against the company last year over the ongoing dispute.
The conflict reportedly centered on problems inside his condominium, including what Lambert described as mold and water intrusion. His complaints were documented in multiple social media posts, photographs, and videos appearing on an X account under the name "OfMiceandMold."
In the account's apparent final activity before the shooting, Lambert posted the message, "My manifesto is an engineering report," less than 10 minutes before the first emergency calls reporting gunfire, according to the AP.
The post included screenshots of an engineering report detailing his complaints against the Metropole Condominium Association.
Lambert had repeatedly used the account to document what he claimed were problems inside his apartment and criticize the association's handling of the situation.
In an October post, he accused the HOA of engaging in what he described as "months of 'Luigi' tactics." He also referenced submitting an independent engineering report as part of his efforts to address the alleged problems.
The posts are now part of the information surrounding the investigation as authorities work to establish what led to the deadly violence.
Police have not publicly established a definitive motive for the shooting. The investigation remains ongoing as authorities examine Lambert's background and the circumstances leading up to the attack.