Watch: Why Bryan Kohberger Left Roommate Dylan Mortensen Alive, According to Idaho ProsecutorNewly released police reports are giving insight on how Bryan Kohberger may have entered the house where he killed four college students without being detected. Before Kohberger murdered four University of Idaho students at an off-campus home in November 2022, there were several strange instances involving victim Kaylee Goncalves' dog Murphy, her friends told authorities in investigation documents publicly released in July.