AN INVESTIGATION IS CONTINUING INTO THE DEATH OF A SULLIVAN COUNTY JAIL INMATE WHO COLLAPSED IN HIS CELL. 46 YEAR OLD RUSSEL LLOYD KISER WAS GIVEN MEDICATION FRIDAY MORNING AFTER HE COMPLAINED OF CHEST PAINS. KISER WAS RETURNED TO HIS CELL. CORRECTIONAL OFFICERS AND MEDICAL STAFF ATTEMPTED TO REVIVE HIM BUT HE LATER DIED AT BRISTOL REGIONAL MEDICAL CENTER. AUTHORITIES SAID IT APPEARS HE DIED OF A HEART ATTACK OR OTHER NATURAL CAUSES. NO FOUL PLAY IS SUSPECTED. HE WAS SERVING A THREE YEAR SENTENCE FOR BEING AN HABITUAL TRAFFIC OFFENDER. AN AUTOPSY HAS BEEN ORDERED.