¶ 1. The Portage Daily Register appeals an order denying its writ of mandamus which sought to compel the Columbia County Sheriffs Department to provide it with a copy of an investigative *361 report pursuant to Wis. Stat. § 19.37 (2005-06). 1 The Sheriffs Department denied the request on the ground that the report, a copy of which the Sheriffs Department retained, had been forwarded to the district attorney's office and was part of an open investigation. The circuit court determined that this reason for denying the report was sufficiently specific, and that the Sheriffs Department properly withheld the report under the public records balancing test. We conclude that the Sheriffs Department did not state a legally specific policy reason for its denial. Accordingly, we reverse.
BACKGROUND
¶ 2. In the months preceding the fall 2006 Republican primary election for Columbia County Sheriff, fliers attacking one of the candidates appeared in mailboxes throughout the county. The fliers were authored by an anonymous and unregistered group calling itself "Concerned Citizens of Columbia County." The fliers were brought to the attention of the Columbia County District Attorney, who told the local newspaper, the Portage Daily Register, that she had "instructed the . . . Sheriffs Department to forward one to her office with a report for investigation into possible illegal campaigning."
¶ 3. On July 26, 2006, the Register made a written request under the Wisconsin public records law for a document it described as a "Sheriffs Department report No. 06-24428 dated on or about June 28, 2006." The Sheriffs Department denied the request in a letter *362 dated August 9, 2006. 2 The letter stated the following basis for denial: "The matter has been referred to the District Attorney's Office for review to determine if, in fact, it is criminal in nature or not and/or whether additional investigation is required. The matter, therefore, remains an open and ongoing investigation and cannot be released at this time." The letter further asserted that upon termination of the investigation, "the report can be reviewed for release under the WI Open Records Law."
¶ 4. The Columbia County District Attorney determined that her office could not review the matter due to a potential conflict, and ultimately the Dodge County District Attorney agreed to act as special prosecutor in the matter. On September 1, 2006, the Dodge County District Attorney released to the public a memorandum he had sent to the Columbia County Sheriff indicating that after reviewing the investigative reports prepared by the Columbia County Sheriff, he had decided to decline prosecution. In addition, the district attorney released to the public "copies of the law enforcement reports generated by this investigation," including report number 06-24428.
¶ 5. The report was an incident report consisting of eight pages, with just over one page of narrative. In it, the investigating officer described the investigation he completed on June 28, 2006, consisting of an interview with the complainant, his own observations about the flier, his contacts with the district attorney's office and the Shopper Stopper, 3 and an interview with the *363 complainant's mother, who had also received a flier. At the end of the report, the investigating officer stated:
DISPOSITION
This report will be forwarded to the Columbia County District Attorney's Office for their review. I have nothing more at this time.
End of report
¶ 6. Prior to the time that the report was made public, the Register filed a mandamus action against the Sheriffs Department and Sheriff Steven Rowe under the public records law, Wis. Stat. § 19.37. The Sheriffs Department filed an answer, and the court held a hearing on the matter. Neither party provided the court with a copy of the requested record to review
in camera
either before or during the hearing. The court determined that the reasons stated by the Sheriffs Department for denying the request were sufficiently specific under
Journal/Sentinel, Inc. v. Aagerup,
DISCUSSION
Mootness Argument
¶ 7. The Sheriffs Department first points out that, following disclosure by the district attorney, the Register received a copy of the sought-after report from the Dodge County District Attorney. It contends that, as a result, a decision by this court in the Register's favor
*364
can have no practical effect on the controversy, and the issue on appeal is therefore moot.
See Warren v. Link
Farms,
Inc.,
¶ 8. We will generally not consider issues that are moot on appeal.
See Hernandez v. Allen,
Standard of Review
¶ 9. Where a circuit court, determining a petition for a writ of mandamus, has interpreted Wisconsin's
*365
public records law,
see
Wis. Stat. §§ 19.31 through 19.39, and has applied that law to undisputed facts, we review the circuit court's decision de novo.
State ex rel. Milwaukee Police Ass'n v. Jones,
Sufficiency of the Denial
¶ 10. We begin our discussion by recognizing that the legislature has created a statutory presumption that all government records are public. Wisconsin Stat. § 19.31 provides that §§ 19.32 to 19.37 (the Wisconsin public records law) "shall be construed in every instance with a presumption of complete public access, consistent with the conduct of governmental business. The denial of public access generally is contrary to the public interest, and only in an exceptional case may access be denied."
¶ 11. This strong presumption of public access may give way to statutory or specified common law exceptions, or, if there is an overriding public interest in keeping the record confidential.
See Hathaway v. Joint Sch. Dist.,
*366
¶ 12. The supreme court has established a two-step process for analyzing the question of whether a custodian's denial of access can be sustained by the reviewing court.
See Baldarotta,
¶ 13. The Sheriffs Department's denial stated as follows: "The matter has been referred to the District Attorney's Office for review to determine if, in fact, it is criminal in nature or not and/or whether additional investigation is required. The matter, therefore, remains an open and ongoing investigation and cannot be released at this time."
¶ 14. When denying inspection, a records custodian is not required to "provide a detailed analysis of the record and why public policy directs that it must be withheld."
Aagerup,
¶ 15. The Sheriffs Department argues that it was appropriate for it to withhold the document under its reading of
State ex rel. Richards v. Foust,
¶ 16. The Sheriffs Department contends that because it transmitted the report to the district attorney 5 and the report related to an ongoing investigation, the Sheriffs Department lacked the authority to disclose the report in light of the ruling in Foust. The Sheriffs Department argues that it was not for it to decide *368 whether the record was a prosecutorial record under Foust, because the district attorney's office was the entity responsible for making that determination. Thus, in essence, it argues that its denial was sufficiently specific because, under Foust, the fact of an open investigation in a prosecutor's office, standing alone, was adequate to support a denial. We conclude that the Sheriffs Department's reliance on Foust is misplaced.
¶ 17. In Foust, the supreme court held that a common law categorical exception exists for records in the custody of a district attorney's office; it did not hold that a similar exception exists for records in the custody of a law enforcement agency. The Sheriffs Department is itself an "authority" which had custody of the requested record within the meaning of Wis. Stat. § 19.35(4)(a), and as such, it was legally obligated to provide public access to records in its possession, consistent with the public records law. This obligation cannot be avoided by invoking a common law exception that is exclusive to the records of another custodian. 6
¶ 18. The fact that the same record was in the custody of both the law enforcement agency and the district attorney does not change the outcome. As the supreme court observed in a related context, "[i]t is the nature of the documents and not their location which determines their status under [the public records law]. To conclude otherwise would elevate form over substance."
7
Nichols v. Bennett,
*369 ¶ 19. The Sheriffs Department argues that allowing a requester to obtain from a law enforcement agency records which it has also forwarded to a district attorney's office would have "dangerous potential" in that it would permit requesters to avoid the ruling in Foust. However, allowing the Sheriffs Department to withhold a record, regardless of its content, simply because a copy of that record has been forwarded to a district attorney's office, would not serve the purposes of the public records law. Moreover, the Sheriffs Department retains the ability to determine whether the release of a particular record is or is not warranted in a given situation. Although a police report is generally categorically exempt from disclosure under Foust if it resides in a prosecutor's file, 8 the Sheriffs Department has an independent responsibility to determine whether a police report should be withheld. Whereas a prosecutor may generally rely on the categorical exemption, the Sheriffs Department must make that determination on a case-by-case basis.
¶ 20. To the extent that the Sheriffs Department can articulate a policy reason why the public interest in disclosure is outweighed by the interest in withholding the particular record — including that disclosure would interfere with an ongoing investigation — it may properly deny access. This is consistent with the approach which has been upheld in the context of a variety of other law enforcement records.
See, e.g., Milwaukee
*370
Journal v. Call,
¶ 21. Expanding the
Foust
exception to include any police report sent to a prosecutor, regardless of content, would also contravene the public record law's mandate to narrowly construe exceptions. "Exceptions should be recognized for what they are, instances in derogation of the general legislative intent [of public access], and should, therefore, be narrowly construed; and unless the exception is explicit and unequivocal, it will not be held to be an exception."
Hathaway,
¶ 22. For these reasons, we conclude that the Sheriffs Department was not entitled to invoke the categorical exception for prosecutorial records which was found to exist in Foust in the context of denying access to a police report.
¶ 23. The Sheriffs Department also relies on Aagerup and argues that its denial was equally as specific as the denial found to be adequate in that case. We disagree.
¶ 24. In
Aagerup,
a coroner denied access to a portion of an autopsy report in an ongoing homicide investigation by stating that the report was implicated in crime detection efforts in the case.
Aagerup,
Here, the custodian stated that the autopsy was part of a law enforcement detection effort. She did not merely cite to the exemption statute, but rather pointed to a particular statutorily-recognized public policy reason for confidentiality: crime detection.
The custodian did not withhold the record because it was "an autopsy"; she withheld "the autopsy" on the grounds that it was implicated in the crime detection effort of this particular case.
Id. at 823-34.
¶ 25. Unlike the reason given in Aagerup, the Sheriffs Department's statement provided no policy reason; it stated only that the matter had been referred to the district attorney's office and was related to an ongoing investigation. This is a statement of fact, not a public policy reason for denying access.
¶ 26. In
Aagerup,
the sought-after record was related to an open criminal investigation; however, that fact, standing alone, did not form the custodian's reason for denial. Instead, the custodian went on to assert a specific policy reason — the protection of crime detection strategy — to justify withholding the portion of the autopsy report from public inspection. In contrast, the Sheriffs Department's denial was not based on crime detection. Nor was it based on prejudice to the ongoing investigation, or informant confidentiality, two additional bases for denial of law enforcement records which have been found to be sufficiently specific.
See
*372
Call,
In Camera Inspection
¶ 27. Finally, we note that the Register has asked us to rule that in order to overcome the presumption of public access under the public records law, a records custodian must ordinarily present the requested record for
in camera
judicial review, and the Sheriffs Department should have done so in the present case. The Sheriffs Department responds that the Register did not raise this issue below. Generally, arguments raised for the first time on appeal are deemed waived.
See State v. Van Camp,
By the Court. — Order reversed.
Notes
All references to the Wisconsin Statutes are to the 2005-06 version unless otherwise noted.
Two days earlier, the Sheriffs Department denied the request orally.
The fliers had been anonymously deposited into Shopper Stopper newspaper tubes.
With certain limited exceptions not applicable in the present case, Wis. Stat. § 19.37(2)(a) provides for the award of reasonable attorney fees, damages of not less than $100, and other actual costs to the requester "if the requester prevails in whole or in substantial part" in an action filed under the public records law.
The Register argues that it appears from the record that the Sheriffs Department did not send the requested report to the district attorney's office until after the Register made its request, and the Sheriffs Department does not dispute this assertion. Because we conclude that the Sheriffs Department's obligation to respond to the request arises because it is an authority with an independent responsibility under the public records law, it does not matter for purposes of our analysis whether the Sheriffs Department had yet transmitted a copy of the report at the time it responded to the public records request. The salient fact is that the Sheriffs Department retained its own copy of the record at issue, which it concedes.
The Sheriffs Department does not argue that it is independently entitled to a common law exception for records forwarded to a district attorney's office.
In
Nichols v. Bennett,
the supreme court determined that a record is not automatically exempt under
Foust
simply be
*369
cause it is stored in a prosecutorial file.
Nichols v. Bennett,
But see Nichols,
