Preschool Teacher Arrested for Murder During Naptime and Dumping Body Along Highway.

Diana Ornelas, a 22-year-old preschool teacher at Stanford University's Children's Center, was arrested for murder in connection with the shooting death of 24-year-old Oliver Waterfall. The motive is unclear, but police believe Ornelas was friends with both the victim and another suspect, Dennis Novoa. Ornelas was fired from her job and held without bail. The Children's Center assured parents that the arrest did not disrupt operations and that the children were not present during the arrest.