Douglas County Sheriff John Hanlin (C) speaks at a news conference in Roseburg, Oregon October 2, 2015. Chris Harper-Mercer, the man killed by police on Thursday after he fatally shot nine people at the southern Oregon community college was a shy, awkward 26-year-old fascinated with shootings, according to neighbors, a person who knew him, news reports and his own social media postings.  REUTERS/Steve Dipaola - RTS2T5X
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