Officials say a man charged with four counts of murder for allegedly killing his parents and two others has been indicted. Joseph Eaton is also facing additional charges related to shootings on the highway that police said followed the killings. The Maine attorney general's office said Eaton was indicted on Friday. Law enforcement officials say the 34-year-old Eaton confessed to police to the killings at a property in rural Bowdoin and to more shootings that injured three on Interstate 295 in Yarmouth. The bodies were found on April 18, the same day of the highway shootings. Eaton was released from state prison four days earlier.