Seven adults and one teenager were taken to the hospital with injuries, Wauwatosa Chief of Police Barry Weber said in a statement. The extent of their injuries is unknown, he said.
The perpetrator is “at large,” Wauwatosa Mayor Dennis McBride told ABC News.
The incident began just before 3 p.m. local time, officials said, when officers were called for an active shooter situation at the mall. Witnesses reported hearing up to a dozen gunshots, officials said. The shooter was no longer at the scene when emergency personnel arrived, Weber said.