NEW : Jared Martin 's parents took away his shotgun and told him he needed help . NEW : Audetat found Loughner wearing earplugs , and Loughner also stated several times that he pleaded the Fifth Amendment , documents said . Loughner bought six or seven boxes of ammunition , documents say . NEW : He purchased a 9 ##mm before Christmas 2010 , documents say . NEW : Loughner ran from parents just before the shooting ##s , mom says .
NEW : Jared Martin 's parents took away his shotgun and told him he needed help . NEW : Loughner bought six or seven boxes of ammunition , documents say . NEW : He purchased a 9 ##mm before Christmas 2010 , documents say . NEW : Loughner ran from parents just before the shooting ##s , mom says .