a law enforcement source says the fbi watched him for four days before he was arrested. the fbi, local police, idaho state troopers were at their house approximately 3 a.m. knocking on the door and announcing themselves. kohberger graduated in may from desales university with a masters in criminal justice and was pursuing a doctorate only about seven miles away from the university of idaho. he has to appreciate the seriousness of what is happening right now. oh, absolutely. he is very intelligent. in my hour conversation with him, that comes off. i can tell that. and he understands where we are right now. reporter: while at college at desales, kohberger asked ex-cons to participate in a study on crime. this study seeks to understand the story behind your most recent criminal offense with emphasis on your thoughts and feelings throughout your experience he wrote on an online
in criminal justice. and pursuing a doctorate in washington state university only about seven miles away from the university of idaho. he has to appreciate the seriousness what s happening right now. absolutely. he is very intelligent. in my hour conversation with him that comes off. ip can tell that. and he understands where we are right now. reporter: while at college at desales, kohberger asked ex-cons to participate in a study on crime. this study seeks to understand the story behind your most recent criminal offense with emphasis on your thoughts and feelings throughout your experience. he wrote on an online message board. this person in kind of, grading my papers was, you know, allegedly a horrible murderer. reporter: kohberger working as a teaching assistant in washington and one student claims his demeanor and strict grading changed after the murders. he started grading everybody just 100s and obviously now
seriousness of what is happening right now. oh, absolutely. he is very intelligence. in my hour conversation with him that comes off. i can tell that. he understands where we are now. reporter: while at college at desales, kohberger asked ex-cons to tell about their crime. this person that had been grading my papers was allegedly in this horrible murder. reporter: kohberger was working as a teaching assistant in washington and one student says his demeanor and strict grading changed after the murders. he started grades everybody 100s and now he seems like he