• This April 27, 2016 booking photo released by the Carroll-Montgomery County Correctional Facility in Vaiden, Miss., shows Odell Hallmon, who is charged with three counts of first-degree murder, one count of aggravated assault and one count of being a felon in possession of a firearm. A judge ordered him held without bond in the Wednesday pre-dawn shooting deaths in Montgomery County of his former girlfriend, the girlfriend's mother, and a third man. A fourth man was shot and wounded. (Carroll-Montgomery County Correctional Facility via AP)

    Disputed Mississippi witness now faces own murder charges

    JACKSON, Miss. (AP) — A man has been charged with murder in the shooting deaths of three people in a Mississippi county Wednesday, and authorities said the suspect is a onetime jailhouse informant whose testimony helped convict another man of four 1996 killings.