Deputies say one person was killed in a Friday morning crash in Fond du Lac County.The Fond du Lac County Sheriff's Office says they got a call at 10:47 a.m. of an overturned minivan in a ditch on River Road in the township of Byron. The caller indicated two people were trapped inside the van.Deputies say first responders freed the trapped passenger. However, the driver a 45-year-old Fond du Lac woman was pronounced dead at the scene.Investigators are looking further into the crash.Names of those involved in the crash are not being released at this time.