A suspect has been arrested in the murder of Yale pharmacology graduate student Annie Le. Raymond Clark, who the police called a "person of interest" in the investigation earlier in the week, was taken into custody after DNA evidence linked him to the killing of Le. Clark was a lab technician in the building where Le worked and where her body was found on Sunday. According to police, a digital trail of swipe card access records led them to suspect Clark, who was then found with scratch marks on his body, police say. He is being held on a $3 million bond. Le was to be married the day her body was found. The Yale community has been deeply shaken by the crime. Thomas Kaplan, the editor of the Yale Daily News, gives us his reaction.