DNA evidence can play a critical role in Florida sex crime cases, but it also has some limits. In many cases, DNA evidence may confirm that the person charged with the crime and the victim had some sort of sexual contact, but it can’t determine whether that contact was consensual. Similarly, DNA from a third person may show that the victim recently had sex with more than one person, but it can’t determine the source of any injuries often associated with a sex crime. Florida’s First District Court of Appeals recently explained some of the restrictions on using third-party DNA evidence in sex crime cases.A defendant was charged with sexual battery following an incident with a student at the University of West Florida in Pensacola. The woman invited him to her dorm room one day after the two met off campus. They talked for a while and started kissing. That’s when, according to the court, the defendant became more aggressive. He closed the door and turned off the lights, the court said. The he allegedly held the woman down, grabbed her neck, pulled down her pants and “forced himself on her,” according to the court. He was arrested after the victim’s friends called the police when she told them what had allegedly happened.
The defendant argued at trial that the sex was consensual. The victim testified that he raped her. The trial court declined his request to enter into evidence DNA samples from a third person that were taken from the victim’s underwear shortly after the encounter. He was convicted and sentenced to 25 years in prison.