on is now investigating the officer-involved shooting, the police department said. That investigation remains active.

Madison protests, video circulating online

What they're saying:

Hundreds of people gathered near where the shooting happened with signs, WMTV-TV reported. Those who assembled expressed anger at the situation.

WMTV-TV obtained viewer video, which the news outlet said captured the sound of three gunshots.

In a statement on its website, the Madison Police Department wrote:  We are aware of cell phone video circulating online showing this incident. We ask the community to remain calm and remember this is only one perspective of the entire incident. Additional video, that has not been circulated online, is being reviewed. 

This is a developing story. Check back for updates.