The Door County Sheriff's Department is still investigating an incident involving a motorist who died after his vehicle drove off the ferry dock Thursday night. According to its release Friday morning, the department received word of the incident before 7:30 p.m. at the Washington Island Ferry's dock The initial investigation shows that a person was driving a sports-utility vehicle northbound on State Highway 42 when it drove off the dock into the water. The person was pronounced dead when their body was eventually recovered by emergency personnel. The department withholds the person's identity until friends and family are notified. In addition to the Door County Sheriff's Department, the fire departments of Sister Bay/Liberty Grove, Egg Harbor, Ephraim, Baileys Harbor, Gibraltar, Washington Island, and Sturgeon Bay, the United States Coast Guard, Wisconsin Department of Natural Resources (DNR), Door County Emergency Services, and the Door County Dive Team, all responded to the incident.  The highway was reopened at 3:14 a.m. to traffic.