Staff Sgt . Calvin Gibbs is sentenced to life in prison , with parole possible . NEW : He remains under investigation for the 2004 shooting death of a family in Iraq . Comment: Gibbs ' platoon staged killings of civilians as firefights with Taliban . Robert Stelle , a prosecutor in the case , told the court in closing arguments Wednesday . ` Defense says Gibbs ' accusers were high on hashish at the time .
Staff Sgt . Calvin Gibbs is sentenced to life in prison , with parole possible . NEW : He remains under investigation for the 2004 shooting death of a family in Iraq . Comment: Gibbs ' platoon staged killings of civilians as firefights with Taliban . Defense says Gibbs ' accusers were high on hashish at the time .