PERCY ANDERSON, District Judge.
Pursuant to 28 U.S.C. § 636, the Court has reviewed the Petition, all of the records and files herein, and the Final Report and Recommendation of United States Magistrate Judge ("Report").
The Court notes that Petitioner appears to raise, for the first time, a number of claims that were not addressed in the Report. Specifically, Petitioner challenges the following aspects of the police investigation preceding his state prosecution, his state prosecution, and his state habeas efforts: denial of discovery of jury misconduct; denial of evidentiary hearings on collateral review; impermissibly suggestive show-up; unreliable identification testimony; clearly erroneous and inconsistent pre-show-up description; prosecutorial misconduct; false or misleading arguments, presumably by the prosecution; denial of right to present a defense; insufficient evidence to support presumption of harm to occupants; illegal detention, arrest, search, and seizure; denial of a full and fair suppression hearing; failure to preserve evidence in bad faith; use by the prosecution of incurably prejudicial hearsay; hearsay impermissibly admitted for the truth of the matter asserted on the critical issue of intent; and denial of discovery on peace officer personnel misconduct, including as it related to a motion to suppress evidence; and failure to preserve evidence. (Dkt. No. 62 at 1-2.) While Petitioner raised many of these arguments on direct appeal of his conviction to the California Court of Appeal or during state habeas proceedings (Dkt. No. 1 at 2-5), and discussed his challenges to these aspects of his state criminal proceedings in opposition to Respondent's Motion to Dismiss and Answer (Dkt. Nos. 29, 47), Petitioner did not raise these as claims in his Petition in the instant action (see Dkt. No. 1 at 5-9).
Generally, a district court is not required to consider new arguments or evidence raised for the first time in an objection to a magistrate judge's recommendation, but the court actually must exercise its discretion in declining to do so; the court cannot simply adopt the recommendation without explaining that it will not consider a new matter. See Jones v. Blanas, 393 F.3d 918, 935 (9th Cir. 2004); Brown v. Roe, 279 F.3d 742, 745-46 (9th Cir. 2002); United States v. Howell, 231 F.3d 615, 621-22 (9th Cir. 2000). Here, the Court declines to consider the numerous new grounds now asserted by Petitioner because Petitioner is raising them after the Magistrate Judge already had issued the Report. The Court's conclusion in this regard is buttressed by the fact that, even at this late stage, Petitioner fails to provide any facts or legal citations to support these new grounds, thus failing to adequately present those claims to the Court. See Greenway v. Schriro, 653 F.3d 790, 804 (9th Cir. 2011) (stating that a "cursory and vague claim cannot support habeas relief" (citing James v. Borg, 24 F.3d 20, 26 (9th Cir. 1994))); James, 24 F.3d at 26 ("Conclusory allegations which are not supported by a statement of specific facts do not warrant habeas relief." (citing Boehme v. Maxwell, 423 F.2d 1056, 1058 (9th Cir.1970))).
Accordingly, IT IS ORDERED that the Petition is denied and Judgment shall be entered dismissing this action with prejudice.