The Zanesville Post of the Highway Patrol is investigating a fatal accident. It happened around 11:00 Monday morning on Norfield road in Muskingum County. Troopers say 74-year-old Kitty Funk of Norwich was traveling west on Norfield road and drove into the rear of a Muskingum County tractor that was mowing the grass on the berm. Investigators say it is possible that Funk suffered some type of medical problem prior to the accident. The Highway Patrol says the accident remains under investigation.