According to the Metropolitan Police Department, the suspect—identified as a white male—barricaded himself inside an apartment following the attack. During the standoff, the suspect fired through the door at responding officers on at least two occasions. Police later confirmed that the suspect had died.
Of the four individuals injured in the attack, one remains in critical condition, while the others sustained non-life-threatening injuries. Eyewitnesses reported hearing sudden loud noises and gunfire both inside the fitness center and near an adjacent alley before evacuating the building during the busy morning rush hour.
The incident drew a swift response from local police and federal security forces in the nation's capital, intensifying ongoing national discussions regarding law and enforcement policies in the city.

