The black man accused of abducting University of Virginia student Hannah Graham has been linked to a 2005 sexual assault in Fairfax City via DNA evidence collected from one of the victim’s fingernails, according to court records

The Virginia Department of Forensic Science’s comparison of DNA taken from Jesse L. Matthew Jr. and the sample taken from the woman at the time of the attack concluded that there is a “1 in greater than 7.2 billion” chance that the DNA might belong to another person, according to the court records. Such a scientific finding, which eliminates almost the entire world population, probably will be central to the criminal case against Matthew.