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Victim in DC shooting ID’d as building manager that Matt Lambert had a beef with over moldy $1.1M penthouse

victim-in-dc-shooting-id’d-as-building-manager-that-matt-lambert-had-a-beef-with-over-moldy-$1.1m-penthouse
Victim in DC shooting ID’d as building manager that Matt Lambert had a beef with over moldy $1.1M penthouse

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The victim shot dead by a well-heeled doctor in a Washington, DC gym was the manager of the shooter’s building — who’s believed to have been feuding with him over black mold in his $1.1 million penthouse, cops said Thursday.

James Stuart, 46, was killed when Dr. Matt Lambert, 55, opened fire inside Vida Fitness on the ground flood of the upscale Logan Circle building Thursday morning, according to Jeffrey Carroll, Interim Chief of Police of the Metropolitan Police Department.

“We do know the victim was the building manager.

A living room with furniture and belongings covered in plastic sheeting.

A picture of Dr. Matt Lambert’s home as it apparently suffered from mold. X/miceandmold

There had been an ongoing dispute between the suspect in this case and the building homeowner’s association regarding maintenance issues [and] mold,” Carroll said at a press conference Thursday.

“So we believe it is related to that.”

Carroll said Lambert used a handgun to kill Stuart.

Four other victims — including two men and two women — were injured in the shooting and were rushed to a hospital.


Here’s the latest on the deadly shooting at a Washington, DC gym:


It was unclear if they were involved in the feud with Lambert or if he specifically targeted them, Carroll said.

Lambert shot the four victims with a rifle from the balcony of his 7th-floor home, cops said.

A brick building undergoing leak testing, with a hose spraying water against a glass and metal facade.

Dr. Matt Lambert holds his book “Unrest Insured” in an undated photo. X/MattLambertMD

One is in critical condition, while the three others suffered non-life-threatening injuries.

Lambert sued the homeowners association of his building over black mold and other problems last year.

“There was some level of planning associated with this,” Carroll said.

A bullet hole in a window of a building.

A bullet hole marks a surface following reports of an active shooting, Thursday, Nov. 12, 2026, in Washington. AP Photo/Julia Demaree Nikhinson

A building exterior undergoing window leak testing, with water spraying against the glass from a hose connected to a vertical apparatus.

A photo outside the luxury apartment building where Dr. Matt Lambert lived. X/miceandmold

Emergency response team on a building's roof deck in Logan Circle.

An emergency response team stands on a roof deck of a building in Logan Circle in Washington, DC, on Thursday, Nov. 12, 2026, after a deadly shooting. Getty Images

Emergency personnel work at the site of a shooting in Washington, DC, surrounded by police cars and fire trucks with flashing lights.

Emergency personnel work at the site of a shooting in Washington, on Thursday, Nov. 12, 2026. REUTERS

Carroll said hostage negotiators spoke with Lambert as he was holed up inside his penthouse after shooting Stuart, and that the doctor-turned-murderer railed about “the HOA and challenges” with it.

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