(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.

An interview that a criminology professor at Washington State University, where Kohberger was a teaching assistant pursuing a Ph.D. in criminology, gave to Idaho State Police was revealed in a document drop first reported on NewsNation's "Banfield."

The professor, who wasn't named in the documents, told investigators that she warned other professors and supervisors that Kohberger might be a predator.

“Kohberger is smart enough that in four years, we will have to give him a Ph.D. Mark my word, I work with predators, if we give him a Ph.D., that’s the guy that in many years

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