A manhunt has entered its third day after a deadly mass shooting at Brown University left two students dead and nine others injured. Rhode Island authorities confirmed a person of interest taken into custody has been released, saying new evidence led investigators in a different direction. Police say video of a man dressed in black, believed to be in his 30s, remains the strongest lead. Officials are confident they are searching for a lone gunman and stress there are no credible threats to the campus. Classes and exams have been canceled as students gather for vigils and investigators continue canvassing for evidence