Authorities are awaiting toxicology results on a woman found dead in a car on prison property last month. 

Carson City deputies say the woman, 27-year-old Patricia Moon was known to deputies, and had mental health issues. 

They say she showed no obvious signs of trauma, and that alcohol was a factor.

Deputies say Moon's car went off the roadway onto prison property, where she was later found dead by prison guards. She was heading south on Edmonds Drive and instead of stopping, drove onto the property.