"Initial witness accounts indicate that a child in the backseat of the vehicle got a hold of a gun and discharged the firearm, sending a single bullet into the driver’s back," the Milwaukee County Sheriff’s Office said in a statement. "The investigation into the death is ongoing."
Local broadcaster WISN quoted the victim's father Andre Price as saying that she was a hardworking mother of three.
"This little girl right here meant everything in the world to me,” Andre Price told the station. And I lost the other half of my heart," Mr Price said.
"Now I don’t have her no more. My chest has been hurting. I have a knot in my chest. They won’t even let me see my daughter. I wanted to hold my daughter for one last time."
"Momma, don't let me die," WISN reported.
Following the shooting, fellow motorists stopped and pushed the car out of traffic before police arrived and performed CPR on Price while awaiting the arrival of emergency medical personnel. Asia Nelson, Price's best friend, told FOX6: "Patrice was one-of-a-kind! She was loving, caring and kindhearted. She always had positive things to say no matter what she was going through."
Source: AP, Fox6, WISN