Article continues below advertisementThe suspect in Charlie Kirk's assassination, Tyler Robinson, was arrested on Thursday, September 11, approximately 33 hours after the Turning Point USA co-founder was shot during his American Comeback Tour.Following news of Robinson's arrest, those who know him spoke out, giving details about the 22-year-old.Article continues below advertisementTyler Robinson 'Kept to Himself'Source: Utah Governor's OfficeThose who know Tyler Robinson recall him being a 'quiet' person.