Hennepin County prosecutors have dropped all charges against a University of Minnesota professor who was accused of stalking and raping an ex-girlfriend. Officials say they were unable to verify allegations against 54-year-old Francesco Parisi. The Star Tribune reports one of Parisi’s lawyers says his client intends to sue his female accuser and possibly the county attorney’s office for defamation. Parisi and his ex-girlfriend reportedly were involved in a contentious legal dispute over property.