In October, during the second trial, a judge ruled a mistrial after the jury was unable to reach a verdict in the capital murder case.
Prosecutors said A.J. fatally shot his mother, Dawn, and father, former NFL player Antonio Armstrong Sr., as the couple slept at their southwest Houston home in the 5300 block of Palmetto Street on July 28, 2016. Prosecutors intended to show that A.J. was embroiled in conflict with his parents over failing grades and poor behavior. They said that the murders were committed by someone who was already inside the home, claiming that neither the burglar alarm system nor any other evidence showed signs of forced entry.