According to CBS Milwaukee, police were called to the shopping mall around 3 p.m. People in the building have been ordered to shelter in place. Bus lines stopping at the mall have also been rerouted.
Wauwatosa Police Chief Barry Weber said at a press conference Friday evening that there were seven adult victims, plus another teenage victim. None had died at the time of the presser, but the police chief had no knowledge of the extent of their injuries.
Stephanie Sutton, a reporter with the local ABC affiliate, noted that an eyewitness has reported between 8 and 12 gunshots fired.
Weber said victims had described the shooter as a white male in his 20s or 30s, but had no other knowledge of his identity so far. They said he had left the site of the shooting but it was unknown whether he remained inside the mall.
Wauwatosa Mayor Dennis McBride said in a statement that 75 police had responded to the scene. The FBI's field office in Milwaukee noted on Twitter it was part of the law enforcement tactical response to the incident, as did the Chicago office of the Bureau of Alcohol, Tobacco, Firearms, and Explosives. An armored vehicle was also spotted outside the mall.
In February, 17-year-old Alvin Cole was fatally shot at the Mayfair Mall by Wauwatosa police. After prosecutors decided not to bring charges against the officer for the shooting, protests hit the city for several days and 28 people were arrested, according to WISN. There was also a shooting in the mall parking lot later in October in which a person reportedly shot themselves non-lethally in the leg in a drug deal gone wrong, according to the Journal-Sentinel.