Three were shot, one fatally, following what was called a chaotic scene in the Dinkytown neighborhood near the University of Minnesota Twin Cities campus.
Multiple agencies responded to the call, which came around 2:40 Saturday morning.
That was after bars had closed in the area on Halloween night.
Police say three different types of firearms were found in the area where the shooting occurred.
The person who died is described as a male who could be a teen or early adult.
Police say the others who were shot were a teenager and a U-of-M undergraduate student.