Condominium manager says DC gym shooter confessed in phone call, citing dispute over living conditions | Washington, D.C.

More details emerged Friday about the previous morning’s shooting in northwest Washington, D.C., as a manager at the shooter’s apartment building shared how angry he was about living conditions there and confessed to the killings.

The gunman killed one person and injured at least five others Thursday in and around the condominium building in the capital’s Logan Circle neighborhood, not far from the White House, where he lived.

Police identified the shooter as Matt Lambert, 55, a doctor involved in an ongoing dispute with his building’s management. The person killed was identified as James Stuart, 46, manager of the condominium complex.

Police say Lambert shot Stuart in a gymnasium in his apartment building just before 8 a.m. ET, before returning to his apartment, where he shot four people from his balcony. Those victims were taken to hospital and as of Thursday, one was in critical condition. Lambert then barricaded himself inside his unit and was found dead with a self-inflicted gunshot wound.

On Friday morning, authorities in Washington said there was one additional victim, who they described as a woman with a “non-life-threatening gunshot wound.”

Charelle Ferguson, another building manager, recalled speaking with Lambert by phone around 9 a.m. that morning, about an hour after the shooting began, she said in an interview with The Washington Post.

Ferguson told the newspaper she called residents to check on their safety after the shooting, when Lambert responded. During the conversation, she said he told her he was tired of the mold and water damage in his apartment.

“The only way people can care is you have to do something,” Ferguson told him. She said he then confessed to her over the phone that he shot all five people.

“I never thought he would do something like this,” Ferguson told the Post. She also said he had previously spoken to her about problems in his unit and she had been sensitive to his concerns.

Court records seen by the Guardian show Lambert sued his condo association in 2025, alleging it failed to address water, mold and moisture damage in his apartment, which he said began after exterior work on the building. The association has denied allegations of negligence and denied liability for damages in court filings, and the litigation remains ongoing.

Lambert’s attorney in the civil case, Joel Braithwaite, said in a news conference Thursday that he was “deeply shocked” by what happened and that he last spoke with his client Tuesday and said he looked fine.

“I can’t tell you how surprised I am because the person I knew as a client is someone whose job it is to heal people,” Braithwaite said.

On Thursday evening, residents gathered at a vigil in the neighborhood, lighting candles and showing support for those affected by the shooting.