Bryan Kohberger flexed like 'American Psycho' and spent Christmas night reading about serial killers

As digital forensics experts analyzed the cellphone of Bryan Kohberger, the 30-year-old failed criminologist turned convicted murderer, they drew similarities between him and the fictional main character of the book and movie, "American Psycho," the narcissistic banker Patrick Bateman – and they discovered that he spent Christmas night a month after the slayings reading dozens of articles about serial killers.

"I watched ‘American Psycho’ back in the day, and how vain he was, where he would always take like naked photos of himself flexing, similar to that, like with him just in pants, but topless from the waist up, flexing [in] a mirror forward, backward, making different expressions, but just for himself," said Heather Barnhart, the senior director of forensics research with the internationally known digital investigations firm, Cellebrite. "It was like he admired his body."

Her husband, Jared Barnhart, a former Maryland police officer who also works at Cellebrite, also worked the case.

"He takes his shirt off, flexes his muscles, and takes a picture of himself, and then just goes back to whatever he was doing before," he said of Kohberger. "Nonsense."

The Barnharts said they did not have the authority to share the photos, but they described them as narcissistic and strange. He even took photos at bizarre angles, highlighting himself from behind and in profile.

One selfie, previously unveiled after prosecutors included it in court documents, showed Kohberger smiling and giving a thumb's up in his bathroom hours after the slayings. He had a bandaid on his knuckles, the Barnharts noted, and his hands were red from apparent scrubbing.