FOND DU LAC COUNTY, Wis. (CBS 58) -- A woman is in recovery after a serious crash in Fond du Lac County Friday afternoon, June 12.

Fond du Lac County Sheriff's states that they received a call of a motorcycle crash on County Highway T near County Highway W in the Town of Forest. 

The caller said that a passenger fell from the motorcycle and when first responders arrived at the scene, they found an uninjured 54-year-old man and 44-year-old woman with serious injuries. 

The woman was flown to a nearby hospital for treatment.

Neither were wearing a helmet. 

Deputies ruled out speed and alcohol in the crash. The incident is under investigation.