Police said the suspected gunman later died after barricading himself in an apartment above the Logan Circle fitness center.
WASHINGTON, DC — A gunman killed one man and wounded four other people Thursday morning in and around a busy gym in Washington’s Logan Circle neighborhood before barricading himself in a nearby apartment and fatally shooting himself, authorities said.
The shooting began around 8 a.m. at VIDA Fitness near 15th and P streets NW, about a mile north of the White House. Police and emergency crews flooded the neighborhood as reports of additional gunfire came in, prompting road closures, school restrictions and warnings for residents to shelter in place. By late morning, police said the barricade had ended and the scene was safe, though investigators remained in the area.
Metropolitan Police Department interim Chief Jeffery Carroll said one man was killed inside the gym. Four other people were taken to hospitals, according to authorities. One was in critical condition, while three had injuries that were not considered life-threatening. Officials had not publicly identified the victims as of Thursday afternoon.
Police said the gunman left the gym area after the initial shooting and eventually barricaded himself in a seventh-floor apartment in the building above or adjoining the fitness center. Officers spent about an hour communicating with him as they tried to bring the confrontation to a peaceful end, Carroll said.
During the standoff, authorities said the suspect fired through the apartment door. Officers later heard another gunshot and entered the unit, where they found him suffering from what police described as an apparent self-inflicted gunshot wound. Police later confirmed that he had died at the scene.
Authorities had not publicly identified the suspect by Thursday afternoon. The Associated Press, citing law enforcement officials and another person familiar with the investigation, reported that authorities had preliminarily identified him as Matt Lambert, a doctor who had been involved in a dispute with the condominium building’s management. Police said investigators were examining a possible conflict involving the suspect and the building’s homeowners association, but they had not announced a confirmed motive.
Court records reviewed by The Associated Press showed that Lambert had sued over alleged mold, moisture and water problems in his penthouse apartment. He claimed the problems had kept him from using the unit since 2024. The litigation remained pending. Police had not established publicly Thursday whether that dispute directly caused the shooting.
About 50 people were inside VIDA Fitness when the gunfire began, according to a gym member interviewed by The Associated Press. Witnesses described hearing a loud noise, seeing an injured man on the floor and then evacuating as a fire alarm sounded. Additional gunfire was reported outside as people fled the area.
The shooting brought a large local and federal law enforcement response to Logan Circle. D.C. police, fire and emergency medical crews responded along with federal agencies, while heavily armed officers took positions around the apartment building. Nearby public schools were temporarily placed on alert status, restricting entry and exit while classes continued.
Mayor Muriel Bowser said she had briefed the White House and thanked police and emergency personnel for quickly responding and containing the threat. Authorities lifted the shelter-in-place order and school restrictions after the barricade ended, but police continued to ask people to avoid parts of the neighborhood while investigators processed the scene.
The Metropolitan Police Department continued investigating the sequence of the shootings, the suspect’s relationship to the victims and what led to the attack. Officials had not released the names of those killed or wounded, and police said the investigation into a motive remained ongoing.
Author note: Last updated November 12, 2026.