Bryan Kohberger told his fellow criminology students that he believed his murders of four students may have been a 'one and done type of thing' before he was caught, newly released documents reveal.

A graduate student in Kohberger's class at Washington State University told detectives of the killer's behavior after he carried out the murders of Kaylee Goncalves, Ethan Chapin, Xana Kernodle and Madison Mogen in November 2022.

According to the documents released after Kohberger pleaded guilty last month, he briefly discussed the murders with his classmates when they made national headlines and cops were still searching for a suspect.

As well as speculating on whether the killer was 'one and done', Kohberger also described the slayings as 'horrible', his fellow students said.

The documents also delved into Kohberger's bizarre behavior before the horror murders, as he would continually clash with classmates and faculty and had been reported for ominous antics numerous times.