Jordan Lin Graham Update: Montana newlywed charged with first-degree murder in death of husband

(CBS/AP) HELENA, Mont. - A Montana newlywed accused of  pushing her husband to his death from a cliff in Glacier National Park has been charged with first-degree murder, second-degree murder and making a false statement.

PHOTOS: Mont. newlywed charged with pushing husband off cliff

Jordan Linn Graham, 22, previously appeared in court in September on a second-degree murder charge. First-degree murder carries a mandatory sentence of life in prison if she is convicted.

Prosecutors say Graham confessed to pushing 25-year-old Cody Lee Johnson off a cliff near a popular trail after the two argued on July 7.

Johnson's body was found on July 12 in an area of the park so steep and rugged that a helicopter had to be used in the recovery.

Investigators say Graham was having doubts about her marriage and lied to law-enforcement officials saying that Johnson had driven away with friends.

The couple had only been married for 8 days.

U.S. Magistrate Judge Jeremiah Lunch set her arraignment for Friday in Missoula.

Complete Coverage of the Cody Lee Johnson Murder on Crimesider