Families of the University of Idaho murder victims spoke directly to their children's admitted killer Bryan Kohberger at his sentencing hearing.

Police in Moscow, Idaho, have released documents detailing their investigation into the murders of four University of Idaho students.

Former U.S. Attorney Josh Hurwit speaks about joining the prosecution team in the Bryan Kohberger case, the last-minute plea deal, and the emotional toll of sentencing day.

The hearing is set to begin at 9 a.m. Mountain Time on Wednesday, July 23, at the Ada County Courthouse in in Boise, Idaho.

Despite Kohberger's guilty plea in the Idaho murders, investigators still don't know his motive, who he targeted or where the murder weapon is after he covered his tracks.

At a press conference after the sentencing, lead investigators said the evidence suggests Kohberger specifically targeted the King Road house, but there's no clarity as to who his intended victim was. RELATED: Surviving roommates' emotional sentencing tribute: Living for friends stolen by tragedy

One victim told friends she had a “stalker” and in the weeks before the killings reported seeing a shadowy figure while walking her dog, new documents say.