 One person was killed in a four-wheeler ATV accident in Cass County Monday evening. The Cass County Sheriff's Office says shortly after 5.45 p.m., deputies, along with Cass County medics and Murray Fire and Rescue, responded to the area of 12th Avenue and Baxter Loop for a mail party pinned under a four-wheeler. Upon arrival, deputies were able to locate the mail party. They are identified as 65-year-old Donald Delancey of Murray, who was also deceased.