Rising rapper Speaker Knockerz has been found dead at a property in South Carolina at the age of 19. The body of the young hip-hop star was found on Thursday (06Mar14) in a garage at a house in Columbia. Police do not suspect foul play and an autopsy found no sign of trauma. Officials are now waiting for the results of toxicology tests before ruling on a cause of death, according to Billboard.com. Speaker Knockerz, real name Derek McAllister, was reportedly missing for two days before he was found dead.