Vacated and remanded by published opinion. Judge GREGORY wrote the opinion, in which Judge MOTZ and Senior Judge WILLIAMS joined.
OPINION
This case concerns an appeal from an order by the district court denying a motion to quash a grand jury subpoena. The subpoena seeks documents and testimony from an attorney involving his representation of two individuals and their corporation. The individuals intervened and moved to quash the subpoena asserting both attorney-client and work product privileges. The district court judge conducted an in camera hearing in which the Government presented evidence ex parte concerning the grand jury’s investigation, but the judge did not examine the documents that the individuals (“Intervenors”) claim are privileged. Thereafter, the judge ruled that the Government had made out a prima facie case that the crime-fraud exception applied, thus vitiating the privileges. Because we find that the judge abused his discretion by finding the crime-fraud exception to apply, we vacate and remand. 1
*250 I.
A. The Grand Jury Process and Commorir-Law Privileges
Grand jury proceedings occupy an essential role in the federal criminal justice system. A grand jury serves the invaluable function of both “determining if there is probable cause to believe that a crime has been committed and of protecting citizens against unfounded criminal prosecutions.”
Branzburg v. Hayes,
A court will intervene, however, when a recognized privilege provides a legitimate ground for refusing to comply with a grand jury subpoena.
In re Sealed Case,
Attorney-client privilege protects confidential communications between the client and the attorney. As “the oldest of the privileges for confidential communications known to the common law ... [i]ts purpose is to encourage full and frank communication between attorneys and their clients and thereby promote broader public interests in the observance of law and administration of justice.”
Upjohn Co. v. United States,
The work product privilege protects an attorney’s work done in preparation for litigation.
In re Grand Jury Proceedings, Thurs. Special Grand Jury Session Sept. Term, 1991,
*251 B. The Crime-Fraud Exception
Both the attorney-client and work product privileges may be lost, however, when a client gives information to an attorney for the purpose of committing or furthering a crime or fraud.
See In re Grand Jury Subpoena (U.S. v. Under Seal),
Specifically, we have held that the party invoking the crime-fraud exception must make a prima facie showing that (1) the client was engaged in or planning a criminal or fraudulent scheme when he sought the advice of counsel to further the scheme, and (2) the documents containing the privileged materials bear a close relationship to the client’s existing or future scheme to commit a crime or fraud.
Chaudhry,
When applying the crime-fraud exception to the attorney-client privilege, we have held that it is the client’s knowledge and intentions that are of paramount concern because the client is the holder of the privilege.
In re Grand Jury Proceedings (U.S. v. Under Seal),
Our jurisprudence on the application of the crime-fraud exception to the work product privilege is less well-defined.
*252
We have explicitly held that the crime-fraud exception applies to opinion work product.
In re Doe,
While we have applied the crime-fraud exception in cases in which fact work product was also at issue, our case law has not explicitly delineated the manner in which the crime-fraud exception applies to fact work product. In
In re Doe,
Because fact work product enjoys less protection than opinion work product, it may be discovered upon prima facie evidence of a crime or fraud as to the client only and thus even when the attorney is unaware of the crime or fraud. While the attorney, along with the client, holds the fact work product privilege, the discovery of facts furnished to an attorney does not implicate the same concerns as does invading the necessary privacy of an attorney’s opinion work product, an invasion only justified if the attorney himself knows of the fraud. We thus use similar standards *253 when applying the crime-fraud exception to attorney-client and fact work product privileges. 4
C. In Camera Hearings
Frequently, judges use
in camera
hearings to determine if the crime-fraud exception should apply. When an
in camera
hearing involves an examination of the actual documents for which privilege is claimed, the United States Supreme Court’s decision in
United States v. Zolin,
Before engaging in in camera review [of allegedly privileged documents] to determine the applicability of the crime-fraud exception, “the judge should require a showing of a factual basis adequate to support a good faith belief by a reasonable person,” that in camera review of the materials may reveal evidence to establish the claim that the crime-fraud exception applies.
Id. (internal citations omitted). Once this showing is made, a judge can review the allegedly privileged documents in camera to assist the court in determining if the government has presented a prima facie case that the crime-fraud exception should apply.
However, the
Zolin
decision does not speak to situations (such as here) in which a judge examines evidence from the opponent of the privilege, usually the government,
ex parte
and
in camera
without examining the allegedly privileged documents themselves. While the government must still make a prima facie case demonstrating that the crime-fraud exception applies, we have rejected the proposition that the government must meet an initial burden to qualify it for an
in camera
hearing of evidence alone. In
In re Grand Jury Proceedings,
In that case, while the appellants urged that
Zolin
should apply, we found that
“Zolin
did not provide a general rule applicable to all
in camera
reviews of any materials submitted by parties” and that the government was thus not required to demonstrate an adequate factual basis for support of the crime-fraud exception before making an
in camera
submission to the district court.
In re Grand Jury Proceedings,
*254 II.
Intervenors challenge the district court’s decision on several grounds. 6 Most significantly, they argue that the judge erred by not examining the allegedly privileged documents in camera. Without such an examination, Intervenors contend that the subpoena was over-broad in that the judge failed to limit the subpoena to only those communications made in furtherance of a crime or fraud.
A district court’s determination that the government made a. prima facie showing of crime or fraud should be upheld “absent a clear showing of abuse of discretion.”
7
In re Grand Jury Subpoena,
Turning first to the application of the crime-fraud exception to attorney-client privilege, under prong one of the exception, the Government was required to make a prima facie showing that Intervenors were engaged in or planning a criminal or fraudulent scheme when they sought the advice of counsel to further the scheme. As noted, this prong is satisfied by a showing of evidence that, if believed *255 by a trier of fact, would establish the elements of some violation that was ongoing or about to be committed. Our review of the evidence that the Government presented in camera demonstrates that the district court did not abuse it discretion in finding that some violation of a federal criminal statute was either ongoing or about to be committed.
Despite this finding, under prong two of the exception, Intervenors’ privileged communications must bear a close relationship to their existing or future scheme to commit a crime or fraud. The communications subpoenaed in this case consist of both documents and testimony. As to the documents, we find that under the “close relationship” standard, the district court abused its discretion. The district court simply could not have concluded that any sort of relationship exists between the allegedly privileged documents and the alleged crime because it was presented with no evidence of the contents of these documents. Our holding in
In re Grand Jury Proceedings,
Here, the district court had no such summaries and no basis on which to conclude that these documents are connected to crime or fraud. Indeed, no discussion even took place as to what information these documents might contain. We thus remand this case back to the district court either to examine the actual documents (or summaries thereof) in camera or to otherwise determine whether they satisfy prong two of the crime-fraud exception as it applies to attorney-client privilege. In so doing, we do not hold that a district court must examine allegedly privileged documents (or summaries thereof) in camera before determining whether the crime-fraud exception applies. A district court may be able to determine by other means that allegedly privileged documents are connected to a crime or fraud such as through testimony or a reliable government proffer.
Whether the district court abused its discretion in determining that the crime-fraud exception applied such that the attorney could be compelled to testify before the grand jury presents a somewhat more difficult question. After reviewing the evidence the Government presented in camera, we find that it is unclear if the communications about which the grand jury seeks to question the attorney bear a close relationship to the alleged criminal conduct. Some in camera evidence does show that the attorney was present at meetings in which the alleged criminal conduct could have been discussed, but the evidence is certainly not persuasive in this regard.
We conclude that without more evidence that the attorney’s communications are closely connected to the alleged criminal conduct, the district court also abused its discretion in ordering the attorney to testify. It may be that an in camera review of the allegedly privileged documents or of the attorney’s testimony will demonstrate that the communications during these meetings did relate to the alleged criminal conduct. But the record before us currently does not support application of the crime-fraud exception to the communications between the attorney and Interve-nors.
Because the attorney has asserted the work-product privilege, we must also determine the application of the crime-fraud *256 exception to this privilege. 9 The record does not reveal whether the alleged work product at issue consists of fact work product, opinion work product, or both. Because we apply the crime-fraud exception to the fact work product and attorney-client privileges under similar standards, to the extent that the subpoenaed materials and testimony contain fact work product, the district court should evaluate them under our previously discussed finding on attorney-client privilege.
However, as noted, opinion work product is treated differently. While the Government did present evidence demonstrating that some violation of a federal criminal statute was ongoing or about to be committed under prong one, it did not demonstrate (or attempt to demonstrate at the in camera hearing) that the attorney knew of the violation. Therefore, on remand, the district court must also determine whether the Government has presented prima facie evidence of the crime-fraud exception as applied to the attorney. If the district court determines that a prima facie showing has not been made as to the attorney, but has as to the client, and thus orders the subpoenaed documents to be turned over, it must redact any portions of the documents that contain opinion work product. If the court makes such a finding, the attorney would also be entitled to assert work product privilege as to his testimony before the grand jury that contains opinion work product.
III.
We are both mindful and cautious of the premise that “[w]hen a grand jury’s subpoena is at stake, the standard for evaluating an exception argument must be simple enough for courts to administer swiftly and efficiently, without obstructing the grand jury’s mission or squandering judicial resources.”
In re Sealed Case,
In sum, we remand this case to the district court to examine the allegedly privileged communications (or summaries thereof) in camera or to otherwise determine if the allegedly privileged documents may be ordered produced and the attorney ordered to testify under the crime-fraud exception as it applies to the attorney-client and work product privileges.
VACATED AND REMANDED
Notes
. The statement suggests “that the party asserting the privilege may respond with evidence to explain why the vitiating party's evidence is not persuasive.”
In re Grand Jury Proceedings,
. In
In re Doe,
we indicated that more than prima facie evidence of the crime or fraud must be shown to overcome the opinion work product privilege.
. A court may also order fact work product produced, without invoking the crime-fraud exception, if the party opposing the privilege demonstrates a substantial need for the material and an inability to secure the substantial equivalent of the materials elsewhere without undue hardship.
In re Grand Jury Proceedings,
. At least two circuits have found that a district court must review allegedly privileged
*254
documents
in camera
before determining whether the crime-fraud exception applies.
See In re BankAmerica Corp. Sec. Litig.,
. Intervenors raise other arguments, including constitutional issues. Because we remand this case on other grounds, we do not reach these issues.
. Our decision in
In re Grand Jury Proceedings (U.S.
v.
Under Seal),
.We assume, as did the district court, that the communications sought are privileged. The Government argues in its brief that In-tervenors have failed to establish that the communications are privileged. Because we cannot make a ruling on whether the communications are privileged on the record before us, we leave it to the district court, on remand, to make this determination.
. The record is somewhat unclear on whether the attorney asserted work product privilege because it only reflects that the attorney "joined” in Intervenors’ motion to quash. However, the Assistant United States Attorney stipulated during oral argument that the attorney has independently asserted work product privilege.
