'Knockout' attack: Suspect charged with federal hate crimes AP Conrad Barrett in shown in a 2003 booking photo released by the Harris County Sheriff's Office. By Michael Graczyk, The Associated Press HOUSTON -- A white Houston-area man was arrested Thursday on federal hate crime charges for allegedly shooting video of himself sucker-punching a 79-year-old black man in a "knockout game"-style attack. Conrad Alvin Barrett, 27, made a brief appearance before U.S. Magistrate Judge Frances Stacy, who scheduled a detention hearing for the Katy man on Friday. According to prosecutors, the attack happened Nov. 24 in Katy, but it wasn't until 12 days later that authorities connected the attack to the cellphone video of it. Authorities learned of the case because Barrett allegedly showed the video on the night of the attack to an off-duty arson investigator he had just met at a restaurant in nearby Folshear. According to the criminal complaint, Barrett asked the off-duty investigator and the woman with the investigator if they knew about the knockout game. He told them he played earlier that day, then showed them the video, prosecutors allege. The investigator then flagged down a uniformed officer across the street and led him to Barrett. .