The appellant was convicted by a jury of two counts of violating 21 U.S.C. § 841(a)(1), by selling heroin. The first sale was to a police undercover agent (Crosby) on November 13, 1972, and the second to a paid informer (DuPree) on November 16, 1972. The sole issue on appeal is whether the District Court erred in failing to dismiss the indictment, brought over eleven months after the dates of the offenses. The appellant claims that the government’s delay in commencing the prosecution was unnecessary and prejudicial, violating his rights to due process under the Fifth Amendment and under Rule 48(b) of the Federal Rules of Criminal Procedure. . He alleges that he was hampered in his defense because he was unable to reconstruct his activities on the dates in question or locate witnesses who could assist him in such reconstruction. We find no prejudice and affirm.
The appellant’s Sixth Amendment right to a speedy trial was not denied, since that protection is not triggered until a criminal suspect becomes an “accused,” either by arrest or in
*339
dictment. United States v. Marion,
However, our inquiry is not ended with the holding that the Sixth Amendment and Rule 48(b) are not applicable. The Supreme Court in
Marion
recognized that pre-prosecution delay on the part of the government may violate a defendant’s right to due process of law under the Fifth Amendment, and specifically declared that the statute of limitations does not fully define the rights of criminal suspects to be speedily accused.
Id.
at 324,
There was nothing in the original record indicating the reason for what appeared to us to be a long delay. Because we view the Fifth Amendment claim as one involving a process of balancing the reasonableness of the delay against any resultant prejudice to the defendant, 2 we remanded to the District Court for findings with respect to the reasons for delay.
The District Court found three reasons for delay, each covering a different time period. From November 16, 1972, *340 until approximately May, 1973, undercover agent Crosby was engaged in a continuing investigation of the narcotics traffic in the St. Louis area, and the prosecutors delayed the indictment of the appellant because of the fear that an indictment would destroy Crosby’s effectiveness as an undercover agent and perhaps endanger his safety. 3 From May, 1973, to July, 1973, the delay was attributed to “paralysis” of the local Drug Abuse Law Enforcment (DALE) office, which resulted from the highly publicized “Collinsville raid,” in which officers had mistakenly raided a wrong house in April of 1973. From July, 1973, until the issuance of the indictment on October 18, 1973, the delay was due to the process of assuring the availability of the informant’s testimony and the preparation of the papers and evidence to be presented to the grand jury. The trial court drew no conclusion as to the reasonableness of the delay, holding that, in any event, there was no prejudice.
We agree that the appellant was not prejudiced, but we do feel it important to discuss the reasonableness of the delay. We are aware of the vital role played by informants and undercover agents in the apprehension of persons engaged in illegal drug traffic. Moreover, we respect the government’s need to keep the identity of such informants and agents confidential, both to protect their safety and to continue to use them effectively. See, United States v. Emory,
■x- -x- -x- The people in this subculture simply do not have desk pads and social calendars to assist them in determining where they were at a particular time many months before. -X- -» -X-
Powell v. United States,
The interest of the defendant in preparing his defense while events are still recent and his memory still fresh must be taken seriously by the government in deciding to continue the undercover operation, and it must not be forgotten that the withholding of
notice to
the suspect is a conscious and deliberate act on the part of the police.
See,
Ross v. United States,
supra,
*341
Since it is the duty of the police and prosecutors to weigh the defendant’s rights in deciding to continue an undercover operation, it is
a fortiori
their duty to respect them once the investigation is terminated. We do not have here the prompt filing of charges following such termination, cited with approval in United States v. Emory,
supra
We turn, then, to the question of whether the appellant was prejudiced by the delay. The governing standard in determining the prejudicial effect of a pre-indictment delay is “whether the delay has impaired the defendant’s ability to defend himself.” United States v. Golden,
supra
We cannot say that the finding of the District Court that the appellant was not prejudiced by the delay is clearly erroneous. The appellant took the stand and related an elaborate alibi with respect to the November 13 transaction. Such testimony has been held to undercut a defendant’s claim of faded memory.
See,
United States v. White,
Finally, we cannot say, from reviewing the record, that the delay increased the likelihood of erroneous conviction of an innocent man.
See,
United States v. Kleinbard,
Since we cannot say that the trial court erred in finding a lack of prejudice stemming from the delay between the offenses and appellant’s indictment, we affirm. 5
Notes
.
See,
United States v. White,
. It is often said that unreasonable delay must coincide with prejudice before the due process clause requires reversal and hence many courts, after finding lack of prejudice, refuse to consider the reasons for delay.
See, e. g.,
United States v. Marion,
Since we prefer to view the due process claim as one involving a balancing process, we hesitate to say that prejudice could never be presumed in an outrageous ease of unjustified delay.
See
Note, The Right to a Speedy Trial, 20 Stan.L.Rev. 476, 493-501 (1968). We agree that, at least where the government is not engaging in intentional delay in order to gain a tactical advantage over the accused, the defendant must affirmatively demonstrate prejudice.
See,
United States v. Marion,
supra,
. The paid informant terminated his employment in that capacity in January of 1973.
. This Court’s aside in United States v. Emory, supra at 1020, to the effect that “Ross is a case that we are not inclined to apply broadly,” must not obscure the fact that we agree with the principle of Ross that unreasonable pre-accusation delay causing prejudice to a defendant may call for dismissal of the indictment on due process grounds.
The District of Columbia Circuit itself has not been inclined to apply
Ross
broadly and, indeed, in five cases since the ' Supreme Court’s opinion in
Marion,
has denied a defendant’s claim of prejudice.
See,
United States v. McClure,
supra
(three-year delay between embezzlement and indictment) ; United States v. Parish,
. We have decided two other narcotics cases this day in which the appellant also raised due process claims.
See,
United States v. Norton, 8 Cir.,
