A Lyman man who suffered what the Nebraska State Patrol called a medical emergency before he rolled his vehicle on Highway 92 Wednesday afternoon has died.

The Patrol says 59 year old Henry Zitterfkopf passed away at Regional West Medical Center on Friday. Services are pending through Jolliffe Funeral Home in Scottsbluff.

The Patrol says Zitterkopf was westbound 14 miles east of the Wyoming-Nebraska state line when he suffered the medical problem and his car went into the south ditch where it struck a culvert. The accident occurred shortly after 2:15 Wednesday afternoon.