A Fairfax County middle school teacher was arrested and charged with possessing child pornography. Kristine Knizner, 28, a teacher at Irving Middle School in Springfield and Key Middle School in Franconia, was recently arrested after a brief inquiry, according to Fairfax County police. Police believe none of the victims were her students. The investigation began after police received information on a Snapchat account that may contain child pornography on Tuesday, May 17. Investigators linked that account to an IP address associated with Knizner’s apartment in Springfield’s 6800 block of Meteor Place. Officers discovered child pornography when they searched the flat,...