Updated

Police say a 2-year-old boy playing in the front yard of a South Bend home with his 7-year-old sister may have been fatally struck by a bullet from a gunfight between two rival groups about a block away.

Police said an argument began between the two groups around 6 p.m. Wednesday about a half-mile south of the University of Notre Dame, about a block from where the 2-year-old was playing. Police say one group began running west toward the boy and the other group continued shooting.

Police say no arrests have been made and no suspects are in custody.

The county coroner's office identified the boy as John Swoveland Jr. of South Bend. Deputy Coroner Nancy Pemberton says an autopsy is scheduled for Thursday afternoon.