Updated Monday 6:18 p.m. CST The Wauwatosa Police Department is releasing additional details about the investigation into the shooting at Mayfair Mall on Friday. Eight people were injured, and a 15-year-old Hispanic teen was taken into custody Saturday night. On Monday, WPD said the suspected shooter was arrested in Milwaukee after a traffic stop. The suspected weapon allegedly was recovered in the vehicle. A passenger also was arrested in connection with the shooting. A third person believed to