Devan Y'Shaun Davis-Brooks, 17, was arrested after an off-duty cop allegedly heard him making threats to shoot up his former high school while playing an online video game. A 17-year-old Texas teenager was behind bars Friday after a vigilant off-duty cop playing an online video game allegedly overheard the teen planning a shooting at his former high school. Taylor police said Devan Y'Shaun Davis-Brooks was playing a video game early Wednesday morning and told other players he was going to shoot up Taylor High School. The teen also started bragging about a previous arrest, also for threatening his former school, cops said. Unbeknownst to the teenager, however, he was playing the game with an off-duty Fort Worth police officer, who reportedly heard the entire threat and immediately called Taylor police.