A killer who broke into a family's home and knifed a six-year-old to death at random has been released from prison for a second time after serving just over half his sentence. Ronald Exantus, 42, walked out of prison in Kentucky on Wednesday after serving almost 11 years in connection with the attack that killed Logan Tipton. Logan was sleeping soundly in his room in Versailles in 2015 when Exantus burst in and stabbed him in the head with a knife, before attacking the boy's father and two sisters, who survived.