"It was learned that Matthew Phelps was obsessed with the movie 'American Psycho,' and this Instagram account shows numerous photographs of scenes from the movie and Phelps dressed as the main character," the warrant said, according to The News & Observer. "The movie is about a serial killer, and Phelps expressed interest to a friend regarding what it would be like to kill someone."
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The warrants also said Phelps often argued with Lauren, who was "preparing to end the relationship," The News & Observer reported.
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