an investigation, not initiated by Cable One, which led to plaintiffs 2003 indictment.
Plaintiff filed an objection to Cable One’s motion, arguing that it was not a valid motion to dismiss under Fed.R.Civ.P. 12(b)(6) because it referenced materials outside of the complaint. Plaintiff acknowledged that the motion should properly be converted to a motion for summary judgment, but argued that such a motion could not be filed prior to the filing of an answer. He further argued that the summary judgment motion should be denied because he had not had a realistic opportunity to discover information essential to opposing the motion. He did not, however, file an affidavit under Federal Rule of Civil Procedure 56(f), which allows a party to obtain a deferral of a summary judgment ruling pending further discovery if the affidavit identifies the probable facts not available, the steps taken to obtain these facts, and how additional time will enable the plaintiff to rebut the defendant’s allegations. See Comm. for the First Amendment v. Campbell, 962 F.2d 1517, 1522-23 (10th Cir.1992) (describing requirements of Rule 56(f) affidavit).
The district court ruled that plaintiff had explicit notice from the title and content of Cable One’s motion that it could be converted into a motion for summary judgment. Because plaintiff had failed to file a Rule 56(f) affidavit, the court rejected his argument that he had not had an opportunity to conduct discovery. It ruled that summary judgment was otherwise appropriate, because Cable One had presented a facially legitimate rationale for its investigation and police report, and plaintiff had not presented any evidence that this explanation was pretext. See Argo v. Blue Cross & Blue Shield of Kan., Inc., 452 F.3d 1193, 1202 (10th Cir.2006) (describing burden-shifting analysis of retaliation claim at summary judgment stage).
On appeal, plaintiff contends that the district court erred in granting summary judgment because the rules of civil procedure do not permit such a motion before an answer has been filed, and if they do, he did not have adequate notice before the conversion. “We review for an abuse of discretion a district court’s decision to consider evidence beyond the pleadings and convert a motion to dismiss to a motion for summary judgment.” Bryce v. Episcopal Church in the Diocese of Colo., 289 F.3d 648, 654 (10th Cir.2002). We find no merit to plaintiffs claims of error.
Rule 56 expressly states that a motion for summary judgment can be filed by a defending party “at any time.” Fed. R.Civ.P. 56(b). “Courts and commentators have acknowledged that no answer need be filed before a defendant’s motion for summary judgment may be entertained.” INVST Fin. Group, Inc. v. Chem-Nuclear Sys., Inc., 815 F.2d 391, 404 (6th Cir.1987); see also Rohner v. Union Pac. R.R. Co., 225 F.2d 272, 274 (10th Cir.1955) (recognizing validity of motion for summary judgment filed in lieu of an answer); 10A Charles Alan Wright, Arthur R. Miller, Mary Kay Kane, Federal Practice & Procedure § 2718 at 301 (3d ed. 1998) (“A defending party is not required by the rule to file an answer before moving for summary judgment.”).
Plaintiff makes a related argument that a motion for summary judgment does not toll the time for filing an answer. Cable One filed its motion as a Rule 12(b)(6) dismissal motion, however, which clearly does toll the time to answer. See Fed. R.Civ.P. 12(a)(4) and 12(b). Thus, the motion did toll the time to file an answer until the district court converted it to a motion for summary judgment and resolved the motion. Cf. Wright, Miller & Kane § 2718 at 303-04 (indicating that the tolling provi