Investigators also visited Klein 's office , where Jackson was seen several times in the weeks before his June 25 , 2009 death . FBI uses its drug agents to probe seven Jackson doctors , one nurse . One patient referred to medical care . Attorney ##s : No evidence to support criminal prosecution . Dr. Conrad Jackson already faces a criminal charge .
FBI uses its drug agents to probe seven Jackson doctors , one nurse . One patient referred to medical care . Attorney ##s : No evidence to support criminal prosecution . Dr. Conrad Jackson already faces a criminal charge .