South Milwaukee was reportedly among the departments who responded to the incident Saturday afternoon on Packard Avenue.
Check out stories in the Milwaukee Journal Sentinel and WTMJ radio. From WTMJ:
It began around 8:30 Saturday morning when witnesses reported shots exchanged between two men in the alley behind the apartments in the 62-hundred block of Packard.
One man was taken in for questioning right away, but a second ran into the apartments, and holed-up inside for four hours.
South Milwaukee Blog 