Rex Hyman's defense is challenging DNA evidence specifically whole genome sequencing a technique never before used in a New York criminal trial the prosecution argues it's scientifically valid and links hiren to hair found on victim wrappings the defense says it's unreliable and untested in court the judge hasn't ruled yet but the decision could make or break key evidence in the case charged with seven murders hirman has pleaded not guilty the court is now debating whether to try all charges together or separately the next hearing is expected in April with a trial date possibly later this year for more details on this case check out my video for over a decade that the Long Island serial killer finally caught stay tuned for updates this case is just heating up