Murray allegedly gave Jackson propofol in the hours before death , source says . Sources close to Jackson say doctor administered drug believed to have killed singer . Detective Conrad Murray was with Michael Jackson on day that he died . Police have interviewed Murray twice since Jackson 's death .
Murray allegedly gave Jackson propofol in 24 hours before death , source says . Source close to family says doctor administered drug believed to have killed singer . Dr. Conrad Murray was with Michael Jackson on day that he died . Police have interviewed Murray twice since Jackson 's death .