Police confirm sixth victim in DC condo shooting; suspect dead after barricading himself and starting a fire.

Police have said a sixth person was shot on Thursday morning in Washington, DC, bringing the toll to one person killed and five wounded in an attack they believe was linked to a dispute over maintenance issues in a condo building.

In an updated statement, the Metropolitan Police Department said investigators had found a sixth victim, a woman, after officers initially located five other victims.

She was conscious and breathing with a “non-life-threatening gunshot graze wound”.

Two women and two men were taken to hospital, all conscious and breathing.

James Stuart, the 46-year-old manager of the building in which the suspect lived, died at the scene.

Police believe the suspect, a 55-year-old doctor named Matt Wade Lambert, targeted Stuart while Stuart was doing his morning workout at the gym.

The shooting started just before 8am local time (13:00 GMT) at a VIDA Fitness gym in the city’s Logan Circle neighbourhood, about a mile north of the White House.

Police said Lambert shot Stuart inside the gym on the ground floor of the building before going back to his apartment on the seventh floor and firing on people below from his patio.

Five others, some of whom had been working at a construction site across the street. Police have not detailed the circumstances in which the sixth victim was shot.