"This was evidence retrieved from the victims and from the crime scenes," Special Victims Unit Capt. John Darby told reporters at a Monday afternoon news conference.
Officials say Casey attracted the attention of detectives when state parole officials noticed his resemblance to a composite sketch of the wanted suspect. Officials say Casey has a history of similar attacks in the past. Casey is being charged in connection with seven sexual assaults and robberies between November, 2006 and January, 2007.