Satterly had committed an offense. The court further found that the F. B. I. agent’s discussion with Smith had “no effect whatever upon the judgment, or the integrity or state of mind” of Smith, whom the court found to be a “forthright and honest man.” On the basis of these two findings, the court concluded:
“Consequently, the court finds that 'the incident complained of’ was entirely harmless so far as the petitioner was concerned and did not have the slightest bearing upon the integrity of the verdict nor the state of mind of the foreman of the jury, or any of the members of the jury. Thus any presumption of prejudice is conclusively dispelled. . . .”
The District Court’s limit of our mandate, it seems to us, is hardly warranted by the language of the opinion, even though the language might well have been more explicit. It was our intention that the entire picture should be explored and the incident complained of and to be examined included Satterly’s communication with the juror and the impact thereof upon him then, immediately thereafter, and during the trial, taken together with the fact that the F. B. I. was investigating a circumstance involving the juror and the fact that the juror never knew all during the balance of the trial what the outcome of that investigation was. Thus we stated: “In a criminal case, any.private communication, contact, or tampering, directly or indirectly, with a juror during a trial about the matter pending before the jury is, for obvious reasons, deemed presumptively prejudicial, if not made in pursuance of known rules of the court . . . with full knowledge of the parties.” 347 U. S., at 229. We also pointed out that the record we had before us did not reflect what in-fact transpired, “or whether the incidents that may have occurred were harmful or harmless.” Ibid. It was the paucity of information relating to the entire situation