The Rock County Sheriff’s Office is investigating a deadly, three-vehicle crash, just northeast of Whitewater.  A sheriff’s office news release states about noon Saturday, a passenger van traveling east on East County Line Road failed to stop at Highway 12.  An SUV headed south on Highway 12 hit the driver side of the van in the intersection, and then a truck hauling a fifth-wheel trailer hit the van.  The sheriff’s office says three people were ejected from the van and died at the scene.  Another five people in the van and the driver of the SUV were also injured.  The Medical Examiners Office will be releasing the names of the deceased.