"Happy Face Killer" Keith Jesperson believes Kohberger's awkwardness and high-profile murder case make him vulnerable, and he's recommending a transfer to Oregon.

Bryan Kohberger was formally sentenced to four life terms in prison without parole this week for the brutal 2022 murders of University of Idaho students Ethan Chapin, Xana Kernodle, Madison Mogen and Kaylee Goncalves.

In the days after murdering four University of Idaho students in an off-campus home, Bryan Kohberger’s behavior shifted dramatically and investigators would later find that he had fixated on news coverage of the killings and began paying for items in cash – often wearing gloves – as he avoided the area of the murders.

ABC News sat down with Idaho State Police Lt. Darren Gilbertson, the lead detective in the Idaho murders case, after Bryan Kohberger was put behind bars for life.

Idaho quadruple murderer Bryan Kohberger transitions from county jail to maximum security prison, where inmates with life sentences have nothing to lose.

Bryan Kohberger won't be totally cut off from the world on the inside ... and, he can even send messages to young women across the country -- though not via any dating apps.

Latah County Prosecutor Bill Thompson said he blocked Dylan Mortensen from being within Bryan Kohberger's view while she read a victim impact statement.

This new information comes from two friends of Kaylee Goncalves who spoke with police in interviews that were just unsealed by the Moscow Police Department.

The woman told police that they planned to meet shortly after he stabbed four students, but that they stopped talking because their conversations made her "uncomfortable."