Milwaukee police say three teenage girls were shot at about 7:20 p-m Tuesday on the Rufus King High School campus.
All of the shooting victims are expected to survive.
No names were released, but investigators say they know who the suspected shooter is.
The girls’ basketball team at King High School was hosting a game against Washington High School at the time.
The triple shooting happened three days after a 19-year-old man was shot to death outside the gym at Beloit Memorial High School.
