NASHUA, N.H. (CBS) -- A three-year-old in New Hampshire has been killed, according to the state's attorney general's office.

Christian Jackson of Nashua was taken to Southern New Hampshire Regional Medical Center late Saturday night and died Sunday. The medical examiner completed an autopsy Monday and determined Jackson was the victim of a homicide. Additional results are expected to be released Thursday.

Nashua police and the attorney general's office continue to investigate.

Anyone with information about the case, or anyone who interacted with Jackson in the 48 hours prior to his death, is strongly encouraged to call the Nashua Police Department at 603-594-3500.