Speed and alcohol appear to be factors in a fatal one vehicle crash in Fond du Lac County that claimed the life of a Markesan teenager. Shortly before 2am Sunday rescue personnel were called to the scene on Lake Maria Road near Oak Grove Road, after a vehicle struck a guardrail on a bridge. The driver and lone occupant, a 17 year old male from Markesan, was pronounced dead at the scene. The victim has been identified as Corin Moore.