Suspect pleads not criminally responsible in Maine quadruple homicide

Joseph Eaton entered pleas of not guilty and not criminally responsible for killing his parents, their friends, and the family dog.
Eaton may attempt an insanity defense after confessing to the murders in Bowdoin and shooting at motorists on a highway.
The victims were found dead after Eaton's mother picked him up from prison where he was serving time for a prior assault.
Police remain unsure of Eaton's motive for the slayings, though a note suggested a desire for a new life.
Eaton was charged with murder, theft of weapons, and animal cruelty in the killings.