Radicalized US Muslim clashed with his Jewish co-worker over religion two weeks before he and Pakistani wife killed 14 at office holiday party using huge arsenal of weapons and pipe bombs

http://www.dailymail.co.uk/news/article-3344350/Devout-Muslim-citizen-Saudi-wife-living-American-Dream-identified-heavily-armed-duo-burst-office-holiday-party-slaughtered-14-leaving-baby-mother.html