1 killed, 4 injured in shooting in Washington, D.C.'s Logan Circle neighborhood, authorities say

Five people were shot, including one who died, as a gunman opened fire in and outside a gym in Washington, D.C.'s Logan Circle neighborhood on Thursday morning, police said. 

The suspect barricaded himself in a unit believed to be his in an apartment building over Logan Circle's Vida Fitness before shooting himself, said Jeffery Carroll, the Interim Chief of Police of the Metropolitan Police Department, at a news conference Thursday morning. 

Multiple sources familiar with the incident told CBS News that the suspect is dead. Carroll described the suspect as "contained."

Carroll said that there were five victims, not counting the shooter. One is deceased, one is in critical condition and three have non-life-threatening injuries. The injured victims have been transported to area hospitals, Carroll said. 

Victims found in multiple locations 

Carroll said police received a call for the shooting just before 8 a.m. and that authorities responded within 30 seconds. 

The person who was killed was shot in the gym. Other victims included members of a construction crew across the street and a person in the lobby or alley outside the gym, Carroll said. The suspect is believed to have used a handgun, Carroll said. 

CBS News national security correspondent Nicole Sganga says it appears the suspect opened fire in and outside Vida Fitness, then retreated into a parking garage and ascended into the apartment building before barricading himself in a unit on the seventh floor. 

A fire also was set inside the building at some point during the incident, Carroll said. He said sprinklers went off and that the fire has been contained. He said police don't "know for sure" who set the fire, but that authorities "would kind of expect" it was the suspect. 

Gunshots continued to be heard for the better part of two hours, while officers with the Metro Police Department negotiated with the suspect. Carroll said the suspect fired through the apartment door at police on two occasions. While on the phone with negotiators, the suspect shot himself, Carroll said. 

After hearing the gunshot, officers forced entry into the apartment, where they found the suspect suffering from a self-inflicted gunshot wound. Carroll did not say where the suspect shot himself. 

Police say suspect had conflict with homeowner's association 

The suspect is a White man, according to Carroll. He said police know the man's identity but did not publicly share it. 

The man is believed to be a member of the gym, Carroll said.

Carroll said an investigation into the suspect's motive is ongoing, but said police are aware that he had a conflict with the apartment building's homeowners association. 

Jonathan Csapo told CBS News that the suspected shooter was his upstairs neighbor. Csapo said he had not interacted with the suspect "all that much" but knew he was "very disgruntled with the building's management," who he believed "weren't talking sufficient action" about a water issue in his apartment. The suspect aired his complaints on X and had filed a lawsuit against the building, Csapo said. He also complained during board meetings, becoming "a little more upset" at two recent gatherings, Csapo said. 

"He invited everybody to his unit to see the damage," Csapo said. "He wanted people to know what was happening. He wanted more attention, and he was getting increasingly frustrated that that people weren't listening to him." 

Csapo said he evacuated the building by fire escape after hearing the fire alarm go off. Then he heard shots fired. He and others took shelter around the corner, he said. He said he was shocked that the building, which he described as safe and tight-knit, was at the center of a mass shooting. 

"Everybody knows each other. The building is only 99 units. Everbody says hi to each other in the hallway," Csapo said. "We're just a little neighborhood, and we're all, I think, quite shocked." 

Multiple agencies respond 

The shooting took place about one mile north of the White House. Multiple federal agencies responded because of their proximity to the incident, officials said. 

Streets were closed and residents were asked to avoid the area. A shelter-in-place order was issued. 

The Bureau of Alcohol, Tobacco and Firearms said its Washington Bureau was at the scene and assisting. The Federal Bureau of Investigation said its Washington field office was also aiding the MPD. 

The Secret Service, U.S. Marshals and U.S. Park Police were also responding to the scene. There are no Secret Service protectees involved. The agency and FBI responded because of their proximity to the incident, not because of any connection to the White House. 

Vida Fitness emailed members on Thursday morning to say that its Logan Circle location would be closed until further notice. 

Witnesses describe "horrific" scene 

Witness Jennifer Christine said she was on a treadmill in the gym when she heard shots ring out. She said she witnessed one death inside the gym before leaving the building and taking shelter in a local bagel shop.

"There was no way of getting out of the gym other than going past that scene," Christine told reporters. "It was like chaos. It was horrific, honestly."

Another witness told reporters that he was also on a treadmill when he heard a loud bang. He first thought the sound was a ball popping or something falling to the floor. Then he saw blood on the floor. An alarm went off, and the gym was evacuated, he said. The witness said he and other gym attendees ran outside, where police were already gathered. Then, more shots were fired. 

"We all just started running and people are scattering everywhere," the witness said. 

Witness Max Smith told media that he heard multiple shots around 8:30 a.m. He said he and about 10 other bystanders also took shelter in the bagel shop. 

"I'm very shaken up," Smith said. "You know, you don't expect it."