OPINION
Wе decide whether the public has a common law or First Amendment right of access to materials filed in support of search warrant applications after an investigation has been terminated. We hold that a qualified common law right of access applies. We decline to reach the constitutional question.
Background
Christopher Kortlander owns and operates the Custer Battlefield Museum in Garryowen, Montanа. Beginning in 2005, the United States investigated Kortlander for unlawfully attempting to sell migratory bird parts and for fraudulently misrepresenting the provenance of historical artifacts for sale. During that investigation, *1191 two search warrants were executed (in 2005 and 2008), and the court sealed the affidavits supporting the warrant applications. The government ultimately declined prosecution of any criminal charges.
In 2010, Kortlander asked the district court for a copy of the search warrant applications and supporting affidavits. He initially sought “a personal copy of the entire file, while leaving the file sealed to the public.” Later, however, he asked that the warrant applications be “ordered unsealed” and “fully disclosed.” Citing cases discussing the public’s qualified First Amendment right of access to judicial proceedings, he asserted that “search warrant papers are рresumptively public judicial records,” adding that “[ujnfettered disclosure is entirely appropriate and fitting in this case and should be effectuated forthwith.”
The United States Attorney’s Office initially opposed Kortlander’s request in its entirety, citing the need to protect witness, informant and grand jury secrecy. The government’s objections said that portions of the search warrant affidavits “refer to witness testimony and documentary еvidence collected by the grand jury, as well as informant statements^] and identify] undercover officers.”
Later, however, the government dropped its blanket objection to giving Kortlander access to the records, acknowledging that Kortlander and his attorney had already learned the “details of investigation in the course of negotiation” in the case, including “informant and undercover officer identities” and “grаnd jury material.” “The government therefore no longer ha[d] concerns about disclosure of sensitive law enforcement and/or witness information.”
Nonetheless, the government urged the court to “limit dissemination of the material to Kortlander’s personal review and/or for inclusion in any future court filings,” citing privacy interests of third parties. The government said:
[Concerns have been raised that information collected by Kоrtlander may be posted on web sites. The Ninth Circuit has explained that “the privacy interests of the individuals identified in the warrants and supporting affidavits” supports the conclusion that warrant-related material not be made available for public dissemination. Times Mirror Co. v. United States,873 F.2d 1210 , 1216 (9th Cir.1989).
Consequently, should the Court unseal the warrant applications in this matter, the government requests that any order limit dissemination of the material to Kortlander’s personal review and/or for inclusion in any future court filings.
The district court granted Kortlander’s request for access to the warrant materials, but limited Kortlander’s access in accordance with the government’s suggestions. 1 The court noted that “[t]he government does not object to the unsealing of the records for Kortlander’s personal review and/or inclusion in future court filings, but does have concerns about the information bеing posted on websites.” The court accordingly directed the government “to provide a copy to Kortlander’s counsel for dissemination to Kortlander,” but advised Kortlander “that the information is to be used only for personal review and/or inclusion in any future court filings. Kortlander is ordered not to post the warrant applications on any websites.” The *1192 court did not make any findings — beyond citing unspecified “concerns” about Internet postings — articulating a justification for the restrictions imposed. Kortlander timely appealed. 2
Discussion
The law recognizes two qualified rights of access to judicial proceedings and records, a common law right “to inspect and copy public records and documents, including judicial records and documents,”
Nixon v. Warner Commc’ns, Inc.,
I. Common Law Right of Access
The first step in any inquiry under the common law right of access is whether this right applies at all to the type of documents at issue.
See Kamakana v. City & Cnty. of Honolulu,
Whether the common law right of access applies to warrant materials after an investigation has ended is a question of first impression in this circuit. We have held that the common law right of access does not apply to warrant materials “during the pre-indictment stage of an ongoing criminal investigation.”
Id.
at 1221. But we expressly reserved whether the common law right of access applies to warrant materials after “an investigation has been terminated.”
Id.
We answer that question today, and hold that, as the government concedes, the common law right of access applies under these circumstances.
3
In doing so, we join a number of courts that have reached the same conclusion.
See, e.g., In re EyeCare Physicians of Am.,
*1193
We agree with these courts that warrant materials are “judicial records and documents.”
Nixon,
The requirement that warrants issue only upon oath or affirmation showing probable cause is embodied in the fourth amendment. A judicial officer must review the affidavit to determine whether the warrant should issue. This initial review is subject to further review by distriсt and appellate courts upon motion to suppress the objects seized in the search. Federal Rule of Criminal Procedure 41(g) directs the judicial officer to file the warrant and all papers in connection with it with the clerk of the district court. The papers are then available for use in a subsequent criminal trial if its sufficiency is questioned. We therefore conclude that affidavits for search warrants are judicial records.
We also agree with these courts that post-invеstigation warrant materials fall outside the “narrow range of documents [that are] not subject to the right of public access at all because the[y] have ‘traditionally been kept secret for important policy reasons.’ ”
Kamakana,
Post-investigation, however, warrant materials “have historically been available to the public.”
In re N.Y. Times Co.,
This tradition of openness “serves as a check on the judiciary because the public can ensure that judges are not merely serving as a rubber stamp for the police.”
In re N.Y. Times Co.,
For these reasons, we hold that the public has a qualified common law right of access to warrant materials after an investigation has been terminated. In doing so, we decline to extend Times Mirror to post-investigation access. In Times Mirror, we were concerned primarily with the impact disclosure would have on an ongoing criminal investigation. We said:
First, and most obviously, if the warrant proceeding itself were open to the public, there would be the obvious risk that the subject of the search warrant would learn of its existence and destroy evidence of criminal activity before the warrant could be executed. Additionally, if the proceeding remained closed but the suppоrting affidavits were made public when the investigation was still ongoing, persons identified as being under suspicion of criminal activity might destroy evidence, coordinate their stories before testifying, or even flee the jurisdiction.
Times Mirror,
Having held that the right of access applies to post-investigаtion warrant materials, we must next decide whether the district court properly granted Kortlander only limited access to the warrant materials in this case.
When the common law right of access applies to the type of document at issue in a particular case, “a ‘strong presumption in favor of access’ is the starting point.”
Kamakana,
The restrictions the district court imposed here do not conform to the standards we articulated .in
Kamakana.
Although the court ruled that Kortlander may not “post the warrant applications on any websites,” it did not articulate a “compelling reason” for these limitations or a “factual basis for its ruling.”
Kamakana,
Even when we look past the district court’s order to the underlying government briefs upon which the district court relied, we do not find a compelling reason or a factual basis for the restrictions. The government’s district court brief said only that “concerns hаve been raised that information collected by Kortlander may be posted on web sites,” and cited the general principle that individuals identified in warrants have privacy interests that may justify 1 denying access. The government’s brief did not explain what concerns had been raised, whether they were concrete rather than conjectural or how they constituted a compelling reason for restricting Kortlandеr’s access to the warrant materials!
Under these circumstances, we hold that the district court abused its discretion by *1196 limiting Kortlander’s access to the warrant materials. We therefore vacate the court’s order and remand for the district court to reconsider the application of the common law right of access in this case, applying the correct legal standard. In applying this standard, the court should balance the public’s interest in disclosure against any countervailing concerns that may apply. But the court may not restrict access to the documents without articulating both a compelling reason and a factual basis for its ruling.
II. First Amendment Right of Access
Kortlander argues in the alternative that he is entitled to unrestricted access to the warrant materials under the First Amendment right of access to judicial proceedings. Whether this right of access applies to warrant materials after an investigation has ended is also a question of first impression in this circuit. In
Times Mirror,
we held that the “public has no qualified First Amendment right of access to warrant materials during the preindictment stage of an ongoing criminal investigation,” but we expressly reserved whether the public has a constitutional right of access after “an investigation has been terminated.”
Times Mirror,
We decline to decide the question reserved in
Times Mirror
at this time. First, it has not been addressed by the district court, and we ordinarily prefer the district court to address issues in the first instance. Second, the district court may be able to resolve this case on remand by applying the common law right of access alone, without the need to address the First Amendment question. We prefer to “avoid reaching constitutional questions in advance of the necessity of deciding them.”
Camreta v. Greene,
— U.S. —,
Conclusion
We hold that the public has a qualified common law right of access to warrant materials after an investigation has been terminated. The district court properly recognized that right here, but the court erred by granting Kortlander only restricted access to the warrant materials without articulating a compelling reason for its ruling or making specific factual findings. The district court’s оrder is therefore vacated, and the matter is remanded to the district court to reapply the common law standard to Kortlander’s request.
We decline to decide whether the public has a qualified First Amendment right of access to warrant materials after an inves *1197 tigation has been terminated. In the event that the court denies Kortlander unrestricted access to the warrant materials under the common law, the court should decide in the first instance whether the First Amendment right applies to post-investigation warrant materials and, if so, whether Kortlander is entitled to unrestricted access under the First Amendment standard. 7
Costs of appeal are awarded to the appellant.
VACATED and REMANDED.
Notes
. We treat the restrictions the district court imposed on Kortlander's use and dissemination of the materials as restrictions on his “access” to these documents as that term is used in connection with the common law and First Amendment principles governing access to judicial proceedings and documents.
.We reject the government’s argument that Kortlander lacks standing to appeal because he has not asserted any concrete plans to post the warrant materials on the Internet, a fact Kortlander in any event disputes. Kortlander seeks a single remedy: access to the warrant materials. He indisputably has standing to seek that remedy, and we will not require him to establish standing for each component of that access that may be encompassed within the general remedy he seeks.
.
Times Mirror
also reserved whether the public has a common law right of access to warrant materials when “an investigation is still ongoing, but an indictment has been returned.”
. Though generally invoked by news organizations, the common law right of access to judicial records and documents "is a general right held by all persons.”
In re EyeCare
*1193
Physicians,
Courts have aрplied the common law right of access to a variety of warrant-related materials.
See In re EyeCare Physicians,
. With respect to warrant materials, courts have recognized several concerns that may call for redaction of the materials or withholding of disclosure outright. These concerns include the need to protect an ongoing investigation,
see In re EyeCare Physicians,
. Although there are a number of court decisions addressing whether the First Amendment right of access applies to warrant materials during or after an investigation, they have not always reached identical conclusions.
See Gunn,
. The First Amendment is generally understood to provide a stronger right of access than the common law.
See, e.g., Lugosch v. Pyramid Co. of Onondaga,
