Vinnie Politan examines DNA evidence in the Idaho student murders, highlighting the connection between the suspect, Bryan Kohberger, and the crime scene.

Determinations on the legal issues could have broad implications for crime-solving tactics, and how detectives must conduct themselves when they incorporate DNA evidence into investigations.

Attorneys for a man charged with murder in connection with the killings of four University of Idaho students are asking a judge to throw out most of the evidence in the case.