( CNN) Columbia University has set a prosecution filed by a student over its handled in a sex offense allegation.

A university investigation in 2013 knew Paul Nungesser, an international student from Germany , not responsible of sex misbehavior arising as a result of allegations by fellow sophomore Emma Sulkowicz. CNN does not typically name beings in carnal abuse subjects, but in this instance, both parties have spoken publicly about their experience.

Despite the finding, Nungesser said he was attacked and excluded by Sulkowicz and her followers. To protest the outcome of colleges and universities investigation, Sulkowicz carried a mattress around campus in a achievement case announced “Carry that Weight” that gleaned worldwide scrutiny. Nungesser was never charged with a crime and disclaims the allegations, saying they continue to dog his efforts to pursue a profession as a filmmaker.