NYDailyNews: Marist College shuts down campus, cancels classes over online shooting threat An upstate New York college canceled all classes and shut down campus Friday after someone threatened to "shoot up" the school, officials said. Marist College in Poughkeepsie announced the closure via Twitter and email alerts Friday morning. On Thursday night, a tweet surfaced warning Marist employees not to go to work on Friday. "If you work at Marist I strongly advise you don’t attend school tomorrow," read the tweet, posted at 10:51 p.m. "There is going to be a big surprise. You have been warned." Several hours...