The IGG process often starts when DNA found at the scene of a crime doesn't yield any results through standard law enforcement databases.Will DNA Decide the Fate? Idaho Murder Trial Hits Crucial Point

Attorneys for Bryan Kohberger, the Monroe County man charged with the murders of four University of Idaho students, are asking a judge to throw out most of the evidence in the case.

Defense attorneys for Bryan Kohberger want critical DNA evidence in the high-profile case thrown out, arguing that the way law enforcement used investigative genetic genealogy (IGG) to identify him as a suspect violated his constitutional rights.

Judge to rule this week on DNA evidence in Bryan Kohberger case as defense challenges genetic genealogy linking him to Idaho college murders.