Police are searching for anyone involved in the fatal shooting of a teenager and a van driver who struck and killed a toddler in Milwaukee.

Authorities say the toddler ran into the street and was struck about 5 p.m. Sunday on Milwaukee's northwest side.

The 41-year-old van driver stopped the vehicle and someone shot him. Police say he died at the scene. A 15-year-old boy who was also at the scene was shot and died later at a hospital. It's not clear why the teen was shot.

Police have not identified any of the people killed Sunday.

But a man who says he is the driver's father identified him as Archie Brown Jr. of Milwaukee. Archie Brown Sr. tells the Journal Sentinel (http://bit.ly/1ynP048 ) that his son had four daughters.