On December 30, criminology graduate Bryan Kohberger, 28, was arrested for the murders of four University of Idaho students who were stabbed to death in Moscow, Idaho.As the investigation continues, news outlets have been reviewing Bryan Kohberger’s history and past connections, attempting to probe the mind of the alleged mass killer. In an interview with the Insider, Arun Dash, a 28-year-old student who met Kohberger during their time together at Washington State University, discussed his impressions of the suspect.HotMessMomTV@HotMessMomTV1I'm sure officers already knew- and were just checking in on #BryanKohberger while they continued investigation. I get the gag order pre-trial, but hope they release it once the trial starts #Idaho420815I'm sure officers already knew- and were just checking in on #BryanKohberger while they continued investigation. I get the gag order pre-trial, but hope they release it once the trial starts 🙏 #Idaho4 https://t.co/Nbs07lW9vIDash told Insider reporters he never noticed anything disturbing about Kohberger's behavior. He said:“He asked me what I was studying, where I am from. He would make just friendly small talk."He continued:“Nothing suspicious ever, ever."Mimi Ella@Mimixx7110Apparently Bryan Kohberger made a rap song, 11 years ago. (Via-trifoliumgirl) #bryankohburger #IdahoFour #bk293Apparently Bryan Kohberger made a rap song, 11 years ago. (Via-trifoliumgirl) #bryankohburger #IdahoFour #bk https://t.co/I6CUUZGRzEFox reported that Bryan Kohberger has been charged with four counts of first-degree murder and one count of burglary. Moscow authorities have not yet disclosed a potential motive behind the killings.Bryan Kohberger's acquaintances say he was a chatty personSpeaking to Insider, Arun Dash's roommate, who remained anonymous, said that Bryan Kohberger seemed like a friendly individual. Business Insider reported that he was frequently seen at coffee shops and bars.Nancy Grace@NancyGraceDriving from Murder scene to Kohbergers place in Pullman #BryanKohberger #IdahoFour #IdahoMurders15911Driving from Murder scene to Kohbergers place in Pullman #BryanKohberger #IdahoFour #IdahoMurders https://t.co/RwLAyQiZVPThe student said:“He talked to everybody, he was a very chatty person — not charming, but outgoing."He added that Bryan Kohberger was physically active, a claim that is in line with CNN's reports that the suspect was a former boxing practitioner who closely monitored his diet.The student said:“He seemed like a very fit person, so I asked if he wanted to come to my gym with me."The student added that while Kohberger never seemed to have violent tendencies, he would often drag others into lengthy conversations.The student said:"I know if I start (talking to him), he won't stop."While many students told Insider that Kohberger remained 'chatty' in the days following the killings, in an interview with CNN, a student who had the suspect as a teaching assistant said that he suddenly became withdrawn.Idaho Murders@IdahoMurdersLoading the Mattresses into the trucks. #IdahoMurders #Idaho4 #IdahoHomocides #BryanKohberger391Loading the Mattresses into the trucks. #IdahoMurders #Idaho4 #IdahoHomocides #BryanKohberger https://t.co/IPJXuxtP08The student, Hayden Stinchfield, told reporters:“He stopped leaving notes (on our assignments). He seemed preoccupied."He continued:“The couple times that he did come after, or around that time period, he had a little more facial hair, stubble, less well-kept. He was a little quieter (...) The previous mental preoccupation that we had been noticing, where it was like he didn’t really want to be there, that was at an all-time high. He just didn’t look like he was doing great."lacey jane@laceyjmeeksWhat are YOUR thoughts on the 1st #traffic stop seen here with #BryanKohberger in #indiana, the #idahohomicide #suspect? #Tailgating 🤔 or was there more to this stop…? #IdahoFour #Idaho4 #bryanchristopherkohberger #Pennsylvania #idaho8317What are YOUR thoughts on the 1st #traffic stop seen here with #BryanKohberger in #indiana, the #idahohomicide #suspect? #Tailgating 🤔 or was there more to this stop…? #IdahoFour #Idaho4 #bryanchristopherkohberger #Pennsylvania #idaho https://t.co/rsm9d9z5ATKohberger is currently being detained in Idaho's Latah County Jail. While no link has been established between the suspect and the victims, authorities have connected him to the scene through cell phone data, surveillance footage, and DNA samples.