Federal Bureau of Prisons spokesman John Stahley says the death of 28-year-old Steven Dale Green of Midland, Texas, on Saturday morning is being investigated as a suicide.
Green was a private in the 101st Airborne Division based at Fort Campbell on the Kentucky-Tennessee state line when he deployed to Iraq.
Green and three other soldiers went to the home in Mahmoudiya (mom-ah-DEE'-ah), Iraq, in March 2006. Green killed three members of the al-Janabi family before becoming the third soldier to rape 14-year-old Abeer Qassim al-Janabi (ah-BEER' kah-SEEM' al-jah-NAH'-bee). Green then shot her.
The other soldiers are serving sentences in the military prison at Fort Leavenworth, Kan.