( NewsNation) — Bryan Kohberger’s former professor told investigators the convicted murderer was “obsessed” with serial killers, wrote a paper on burglary and was flagged by several female classmates for sexist behavior.

The killer of four Idaho college students set his own cellmate on edge by “analyzing everything” and taking hour-long showers.

Unsealed investigation documents revealed surviving roommate Dylan Mortensen's initial interview recalling what she heard during the murders.

Authorities unsealed interviews with members of the Washington State University community, where Bryan Kohberger had a reputation of "being a d---," according to a classmate

In another short clip, the 30-year-old murderer is seen standing ominously in the middle of his lockup, slowly cleaning his shoes.

Bryan Kohberger called his mother multiple times after killing four University of Idaho students, including when he returned to the crime scene, forensic analysis reveals

Prison officials at the Idaho Maximum Security Institution have addressed reports about Bryan Kohberger being taunted by inmates.

Inmates at the new maximum security prison that Bryan Kohberger was sent to following his sentencing last month are carrying out a “relentless” taunting campaign against the killer,