According to ABC News
None of the victims’ injuries appear to be life-threatening and they are being taken to the hospital, Wauwatosa Mayor Dennis McBride told ABC News.
The perpetrator is “at large,” the mayor said.
About 75 officers have descended on the scene in Wauwatosa, about 6 miles outside Milwaukee. The FBI’s Milwaukee office also said it was responding to assist local law enforcement personnel.
“Police are actively investigating an incident at Mayfair Mall,” Wauwatosa police said in a tweet. “The mall is currently closed.”