The ex-husband, 58-year-old John Stephen Kristofak, was apprehended Thursday at a Union City motel and charged with murder in the death of his 48-year-old ex-wife, Donna Nations Kristofak.
In October, Donna Kristofak begged Cobb County Superior Court Judge Adele Grubbs not to release him from jail, saying she feared for her life and worried that a court order of protection from her ex-husband would not keep her safe. He was later released.
The judge said she couldn't comment on the case, but told The Atlanta Journal-Constitution that "you cannot predict human behavior."
The judge said that people asked a similar question after 20 children and six adults were gunned down at Sandy Hook Elementary School in Newton, Conn.
"After Newtown people ask, 'How can we stop someone before they do something?,'" Grubbs said. "We don't do that."