The Cortland County Sheriff's office has released the names of the two people in a car that crashed in Marathon.
23 year old Shane Miller of McGraw died.
20 year old Fred Sherman of Killawog was seriously injured and airlifted to Wilson Hospital.
Investigators don't know if Miller or Sherman was driving.
Both were thrown out when the car crashed into a tree and split in two.
The Sheriff's office has determined the car was traveling too fast around a curve on Diver Crossing Road in when it left the road.