One person has been killed and four others injured after a gunman opened fire in Washington DC.
The shooting began on Thursday morning local time inside a gym in an apartment building in the Logan Circle neighbourhood, which is about a mile (1.6km) north of the White House.
Police said the suspect, a white male, was "contained" after barricading himself in one of the apartments. They later confirmed he had died.
Of those injured, one is in a critical condition and the others have non-life-threatening injuries.
While the suspect was barricaded, "he did fire through the door at officers at least on two occasions", Jefferey Carroll, the interim chief of the Metropolitan Police Department, said at a news conference.
Negotiators had been on the phone with the suspect when they heard a gunshot and he stopped communicating with them, according to Carroll.
Officers forced their way into the apartment and saw the suspect had what appeared to be a "self-inflicted gunshot wound", he said.
Carroll added that police "believe there was a fire that was set", which has been contained.
Authorities are still working to understand the exact timeline, suspect's motivation, and other details of the incident.
"We believe there was some sort of a conflict with the apartment building, but we don't have much more than that," Carroll said.
