In a press conference Tuesday night, Milwaukee Police Chief Alfonso Morales said seven officers and a firefighter were injured at the scene near 40th and Lloyd where a large group congregated in search of two missing girls.
The group gathered at a home that neighbors say is known to be used for human trafficking.
After police left the home, the crowd began breaking windows and eventually set fire to the home.
Morales said a van was also set on fire, and he said people were throwing bricks at officers and firefighters.
Around 7:30 p.m., shots were fired into a vehicle, striking a man who later walked into the District 3 police station.
Two others at the scene were also shot and are said to have sustained non-life threatening injuries.
Morales said one of the two missing girls has been found.