He then gave Hampton a dose of secobarbital that rendered Hampton unconscious during the raid on his home .
Before the death of Hampton long - term infiltrator , William O'Neal , shared floor plans of his apartment with the COINTELPRO team .
William O'Neal then gave Hampton a dose of secobarbital that rendered Hampton unconscious during the raid on William O'Neal 's home .
Before the death of Hampton long - term infiltrator , William O'Neal , shared floor plans of his apartment with the COINTELPRO team .