The autopsy on Zwiefelhofer has been completed. His cause of death was blunt trauma to the chest and abdomen, according to Winnebago County Coroner Sue Fiduccia.
A New Milford man is dead after his motorcycle is struck by an SUV.
According to Winnebago County Coroner Sue Fiduccia, Scott Zwiefelhofer, 45, was traveling south on 11th street around 11:00 pm Wednesday night when he was hit by a white GMC Envoy at 11th street and Sawyer Road. Zwiefelhofer was taken to Swedish American Hospital for treatment and was pronounced dead at 12:28am.
Rockford Police say the Envoy fled the scene, but it was located several hours later.
He was not wearing a helmet at the time of the crash. An autopsy will be performed later Thursday and results for toxicology tests will be available in two weeks.
Rockford Police Department's Traffic Division is handling the crash investigation.
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