This is a CID investigation into the death of Karwan Muhhamad Ali Mahmud, a detainee at the Theater Internment Facility (TIF), Camp Bucca, Umm Qasr, Iraq, April 4, 2007. Mr. Mahmud was found unconscious & struggling with a medical emergency by another detainee. A soldier was alerted and medic responded. Mr. Mahmud was found breathless and without a pulse. CPR and other lifesaving measures were initiated, but failed to revive him. Mr. Mahmud was transported to the camp hospital where he was pronounced dead. Cause of Death: Left Ventricular Hypertrophy; Manner of Death: Natural.