Biden cracks down on Russia Michael Hernandez, the infamous killer who at age 14 lured a teenage classmate in the bathroom and brutally slit his throat, has died in prison, online records show. Hernandez was 31-year-old at the time of his death and was serving a life sentence at the Columbia Correctional Institute outside Jacksonville when he collapsed and died Thursday. The possible cause of his death is believed to be drug overdose, which means Hernandez was getting supplies of drugs inside the correctional home regularly. An official cause of death for Hernandez has yet to be given, although no foul play is suspected, authorities said.