Jacob Sullivan, convicted of the gruesome Grace Packer murder, died of aortic aneurysm which broke out Thursday.
Sullivan was at the local hospital when he died, according to an official in the Pennsylvania Penitentiary Department.
Sullivan was sentenced to death for raping and killing his adopted daughter, Grace Packer, 14 years old in 2016.
He and his girlfriend, Sara Packer, planned and carried out a rape-killing fantasy shared by the two, then mutilated Grace Packer’s body and dumped her body in Luzerne District.
Both of them attempted suicide in 2017 but survived, and Sullivan admitted horrific details of the crime to hospital workers and detectives while he was in hospital.