House probe : Blackwater tried to interfere , impede investigation into 2004 incident . Deputy Secretary of State John Negroponte on Thursday told a Senate committee that `` something went tragically wrong '' in the Baghdad incident , and that the State Department and Iraqi authorities are conducting a thorough investigation . Four company members ambushed , killed in Falluja in 2004 incident . Company said unclassified documents were classified , report says . Company calls this ` ` a one - sided version of this tragic event ''
House probe : Blackwater tried to interfere , impede investigation into 2004 incident . Four company members ambushed , killed in Falluja in 2004 incident . Company said unclassified documents were classified , report says . Company calls this ` ` a one - sided version of this tragic event ''