A Madison police officer shot and killed a man who had injured the officer with a knife while resisting arrest, Madison Police Chief John Patterson said Wednesday.

Cellphone video of the shooting, which occurred on a city street less than two miles from the state Capitol, circulated on social media shortly after the incident. Three gunshots can be heard in the video, though Patterson stressed that the footage represented only one perspective.

The deceased man, who was in his 30s, was not immediately identified by police. Advocates for Madison's Black community identified the man as Black and voiced concerns about state violence. Brandi Grayson, head of the advocacy group Urban Triage, stated, "Another Black man is dead on a Madison street, and our community watched him die before we even knew his name."

The incident prompted a crowd to form near the shooting site, with some chanting "Arrest the cops!" Protesters later marched to the Wisconsin State Capitol, interrupting a concert series and demanding accountability for the officer involved.

Police were responding to calls about someone attempting to enter parked vehicles when officers encountered the suspect, who fled on a bicycle. The suspect either fell or was taken off the bike by officers. During a struggle, the suspect produced a knife and injured an officer, Patterson said. An attempt to use a taser was unsuccessful before the same officer fired his weapon. The injured officer was hospitalized.

Another officer sustained an injury, though the details were not clear. Two other responding officers were unharmed.

The Wisconsin Department of Criminal Investigation will lead the inquiry into the shooting, which involved police officers. The four officers who responded to the incident will be placed on administrative leave, consistent with departmental policy.

The shooting occurred on the same street where a white police officer fatally shot Tony Robinson, a biracial man, in 2015. That earlier incident led to large protests, and the district attorney subsequently determined the officer's actions were justified, declining to file charges.

The race of the officer who discharged his weapon on Wednesday and the race of the man killed were not released by the police department.