The highway patrol says an 83 year old Mount Vernon man was killed Saturday in Monroe Township. The Mt. Gilead post says Lawrence Huffman died at the scene, when his motorcycle crossed the center line and was hit by a vehicle. Huffman was thrown from his motorcycle and was not wearing a helmet. The driver of the other car, 66 year old Raymond Cosner of Mount Vernon, was treated for his injuries at the scene and was not wearing his seat belt. The two other passengers in the vehicle driven by Cosner were wearing seat belts and were not injured in the accident.