
Dr. Matt Lambert is the deceased Washington D.C. gym shooter. That’s according to NBC Washington, which cited federal law enforcement sources. Furthermore, Lambert may have left behind an unusual manifesto that has gone viral online and provides clues to a potential motive.
“The suspect of the Washington DC shooting has been identified as Dr Matt Lambert, two federal law enforcement officials told our US partner network NBC News,” Sky News also reported. Authorities have not officially released Lambert’s name.
The active shooter, who went on a shooting rampage at a Washington D.C. gym, is dead. And a possible manifesto has emerged online that raised concerns about the conditions of an apartment, although authorities have not verified it. “My manifesto is an engineering report,” the X post says, linking to a document that said Dr. Matt Lambert complained about “building envelope issues” with a facade and balcony work. NBC Washington reported that the suspect had a conflict with his condo’s Homeowners Association.
The X page in question also contains photos of the inside of an apartment. “Two years of living in luxury (and the start of 6 months with no shower, dryer, HVAC, and cooking),” the author wrote. The page is filled with incessant gripes about building codes and conditions. “Public service reminder- DC code requires disclosure of leaks, mold, and rodent infestation upon sale,” reads one post.
Video emerged from the shooting scene. DC Metro police said in a news briefing that officers were communicating with the suspect during a standoff when they heard a gunshot. Officers made entry into the apartment where the suspect was barricaded, and they located him deceased from a gunshot wound, authorities said. The suspect’s name has not been formally released.
Other videos from the scene showed the massive law enforcement presence. Police were seen on rooftops around Logan Circle, which is located about a mile from the White House, although there doesn’t appear to be any connection to the latter. Washington D.C. Mayor Muriel Bowser praised police for “bringing down crime in this city” in the press briefing.
The Gunman Shot a Person to Death at a Gym & Injured 4 Others, Reports Say

According to Fox News, the rampage started when the gunman shot a person to death at a Logan Circle gym and then injured four other people. The motive is not clear.
The gym in question was Vida Fitness, described by Fox News as “a local fitness chain with a location in Logan Circle.”
One of the injured victims is in critical condition but the others don’t have life-threatening wounds. According to CBS News, the deceased person was shot inside the gym. The suspect then moved outside and wounded “members of a construction crew across the street and a person in the lobby or alley outside the gym,” with a handgun. Eventually, the suspect barricaded himself in a high-rise apartment building, where he eventually was found deceased by police. A fire also broke out outside the apartment building at one point, according to CBS News.
A Witness Described Being on a Treadmill When the Shooting Broke Out at Vida Fitness
A witness described the harrowing scene at the fitness center.
“I was at the treadmill at Vida, and five minutes in, I hear a loud bang…and this dude was on the floor, and somebody says, who was closer to the body, ’he’s dead,’” witness Anthony Mirones said to Fox News. “I heard a loud bang, and then I see blood on the floor, I’m connecting the dots. Two minutes later, there’s a fire alarm, people started evacuating.”
It’s believed the shooter died of a self-inflicted wound, according to NBC Washington.
Dr. Matt Lambert: Possible ‘Manifesto’ Emerges After ‘Vida Fitness’ Gym Shooting