4-year-old dies in ATV rollover accident in Oneida County, Wisconsin, under investigation.

A four-year-old child died in an ATV rollover accident in Oneida County, Wisconsin, on Saturday night. The incident involved three children under ten, and the ATV rolled over, trapping the four-year-old. Despite attempts to save him, he was pronounced dead at the scene. Meanwhile, a separate three-vehicle crash on Sunday injured seven people. The Wisconsin Department of Natural Resources and the Oneida County Sheriff's Office are investigating both incidents.