Wauwatosa police have arrested a 15-year-old Milwaukee boy who they believe opened fire at Mayfair mall Friday afternoon, sending eight to the hospital.
Police Chief Barry Weber said the suspect was arrested Saturday night and that the shooting was the result of an altercation between two groups of people at the mall.
"We do know there was some sort of altercation, and that's when the bullets started flying," Weber said during a Sunday news conference.
Police had said Friday that witnesses described the shooter as a white man in his 20s or 30s. But Weber described the suspect as a 15-year-old Hispanic boy. His firearm was recovered during the arrest.
Four innocent bystanders were among those who received non-life-threatening injuries during the shooting.