Officers told investigators that when they arrived on the scene, Hernandez — who had a history of domestic battery cases in his background and was on parole at the time of the shooting — was holding their 2-year-old son, Hector Jr., and threatening to kill himself rather than go back to prison. After a relative took the child away from him, Hernandez ran into the house, grabbed a knife and held it to his own throat, according to investigative records that cite police accounts.