Suspect in Washington, D.C., gym shooting was doctor in legal feud with condo management

Key Points:

• Dr. Matt Lambert, involved in a prolonged legal dispute over mold and water damage in his luxury penthouse at the Metropole in Washington, D.C., is suspected of opening fire at the building's VIDA fitness center, killing one person and injuring several others before dying by suicide in his condo.
• The victim was James Stuart, the building manager and a key witness in Lambert's ongoing lawsuit against the condominium association and property management company over alleged negligence in addressing water intrusion and mold issues.
• Lambert's lawsuit claimed that repeated water damage and mold growth caused over $300,000 in damages and loss of use of his home, with the condo association denying the allegations and blaming the gym's equipment for moisture problems.
• Police recovered three firearms from Lambert's residence, although he did not have registered guns in D.C., and believe the shooting was premeditated, targeting a specific individual before indiscriminately firing from his balcony.
• Lambert had publicly documented his disputes on social media and was reportedly preparing to start a new job in the medical AI field, with no known history of gun ownership according to his attorney.