Kohberger Changed Behavior After Idaho Murders Took Place, Ex-Student Reveals

A former student of the Idaho murder case suspect Bryan Kohberger has opened up about the alleged killer's change in behavior after the murders happened.

In an interview uploaded by ABC News, Washington State University student Hayden Stinchfield, who had Kohberger as a teacher's assistant in one of his criminology classes, shared how the suspect's personality changed after the quadruple killings.

"It was just like, totally jarring, totally shocking to realize that this person who had been grading my papers was allegedly this horrible murderer," Stinchfield told the news outlet.

"He'd be grading you on what he ended up calling a 'higher standard,' but what it really felt like to us was he was grading us like he would have graded himself as a Ph.D. student... We were all annoyed by him," he added.

According to the WSU student, Kohberger's grading style took an abrupt turn after the murders.

"Around then, he started grading everybody just 100s," he said. "Pretty much if you turned something in, you were getting high marks, and he stopped leaving notes."

He described Kohberger as "preoccupied" and less "well-kept" following the murders.

"The previous mental preoccupation that we had been noticing, where it was like he didn't really want to be there, that was at an all-time high," Stinchfield said. "He just didn't look like he was doing great."

The 28-year-old suspect is currently detained in Pennsylvania, awaiting extradition to Idaho, where he has been charged with four counts of first-degree murder in connection to the deaths of the University of Idaho students Kaylee Goncalves, 21, Madison Mogen, 21, Xana Kernodle, 20, and Ethan Chapin, 20.

Kohberger was also charged with felony burglary in connection with the death of the four victims who were stabbed while they were sleeping, according to Latah County Prosecutor Bill Thompson, as reported by CNN.

The murder suspect was a Ph.D. student in the criminal justice program at Washington State University's Pullman campus.

Investigators are yet to uncover Kohberger's alleged motive in the killings.