opinion: SMITH v. DIGMON, WARDEN, et al.
  No. 76-6799.
  Decided January 16, 1978
  Per Curiam.
  Petitioner sought habeas corpus relief in the United States District Court for the Northern District of Alabama from his sentence following a judgment of conviction for rape in the Circuit Court of Calhoun County, Ala. Among the allegations of constitutional error in his trial — presented to the District Court in petitioner’s traverse to the State’s response to his petition — petitioner claimed that the in-court identification of him by the prosecuting witness was the product of an out-of-court identification at an impermissibly suggestive photographic array and a later uncounseled lineup. The District Court refused to entertain this claim on the ground, recited in its opinion, that “this issue has never been presented to any state court.” No. 77-A-0029-E (mem. filed Feb. 11, 1977). This conclusion was premised upon the absence of any reference to the contention in the reported opinion of the Alabama Court of Criminal Appeals affirming the conviction. Smith v. State, 57 Ala. App. 164, 326 So. 2d 692 (1975). The District Court stated: “It is inconceivable to this Court that had Smith raised that issue [in the Alabama Court of Criminal Appeals] that [that court] would not have written to it.” The Court of Appeals for the Fifth Circuit denied petitioner’s pro se application for a certificate of probable cause and for leave to appeal in forma pauperis. No. 77-8141 (Apr. 20, 1977).
  In his pro se petition for certiorari, petitioner asserted that “■[i]t is beyond doubt that State remedies have been exhausted.” Pet. for Cert. 3. This Court directed the filing here of the briefs submitted to the Alabama Court of Criminal Appeals. Petitioner’s brief to that court reveals that petitioner, citing decisions of this Court, did indeed submit the constitutional contention that the prosecuting witness’ in-court identification should have been excluded from evidence because that identification derived from an impermissibly suggestive pretrial photographic array and a later uncounseled lineup; moreover, the State Attorney General’s brief devoted two of its seven pages to argument answering the contention.
  It is too obvious to merit extended discussion that whether the exhaustion requirement of 28 U. S. C. § 2254 (b) has been satisfied cannot turn upon whether a state appellate court chooses to ignore in its opinion a federal constitutional claim squarely raised in petitioner’s brief in the state court, and, indeed, in this case, vigorously opposed in the State’s brief. It is equally obvious that a district court commits plain error in assuming that a habeas petitioner must have failed to raise in the state courts a meritorious claim that he is incarcerated in violation of the Constitution if the state appellate court’s opinion contains no reference to the claim.
  The motion to proceed in forma pauperis, and the petition for certiorari are granted. The order of the Court of Appeals and the judgment of the District Court are reversed, and the case is remanded to the District Court for further proceedings consistent with this opinion.
  So ordered.
  Simmons v. United States, 390 U. S. 377 (1968); United States v. Wade, 388 U. S. 218 (1967); Gilbert v. California, 388 U. S. 263 (1967); Stovall v. Denno, 388 U. S. 293 (1967).
  Inexplicably, the Attorney General’s response to the petition for cer-tiorari, which squarely presénted the question whether habeas "was improperly denied,” made no mention whatever that his brief to the Alabama Court of Criminal Appeals had joined issue on the pretrial photographic array and lineup issues, and did not point out that the District Court erred in stating in its order that “this issue has never been presented to any state court.” Rather, the response argued only that petitioner had raised only two other issues in federal court neither of which was cognizable on habeas.
choices: involuntary confession habeas corpus plea bargaining: the constitutionality of and/or the circumstances of its exercise retroactivity (of newly announced or newly enacted constitutional or statutory rights) search and seizure (other than as pertains to vehicles or Crime Control Act) search and seizure, vehicles search and seizure, Crime Control Act contempt of court or congress self-incrimination (other than as pertains to Miranda or immunity from prosecution) Miranda warnings self-incrimination, immunity from prosecution right to counsel (cf. indigents appointment of counsel or inadequate representation) cruel and unusual punishment, death penalty (cf. extra legal jury influence, death penalty) cruel and unusual punishment, non-death penalty (cf. liability, civil rights acts) line-up discovery and inspection (in the context of criminal litigation only, otherwise Freedom of Information Act and related federal or state statutes or regulations) double jeopardy ex post facto (state) extra-legal jury influences: miscellaneous extra-legal jury influences: prejudicial statements or evidence extra-legal jury influences: contact with jurors outside courtroom extra-legal jury influences: jury instructions (not necessarily in criminal cases) extra-legal jury influences: voir dire (not necessarily a criminal case) extra-legal jury influences: prison garb or appearance extra-legal jury influences: jurors and death penalty (cf. cruel and unusual punishment) extra-legal jury influences: pretrial publicity confrontation (right to confront accuser, call and cross-examine witnesses) subconstitutional fair procedure: confession of error subconstitutional fair procedure: conspiracy (cf. Federal Rules of Criminal Procedure: conspiracy) subconstitutional fair procedure: entrapment subconstitutional fair procedure: exhaustion of remedies subconstitutional fair procedure: fugitive from justice subconstitutional fair procedure: presentation, admissibility, or sufficiency of evidence (not necessarily a criminal case) subconstitutional fair procedure: stay of execution subconstitutional fair procedure: timeliness subconstitutional fair procedure: miscellaneous Federal Rules of Criminal Procedure statutory construction of criminal laws: assault statutory construction of criminal laws: bank robbery statutory construction of criminal laws: conspiracy (cf. subconstitutional fair procedure: conspiracy) statutory construction of criminal laws: escape from custody statutory construction of criminal laws: false statements (cf. statutory construction of criminal laws: perjury) statutory construction of criminal laws: financial (other than in fraud or internal revenue) statutory construction of criminal laws: firearms statutory construction of criminal laws: fraud statutory construction of criminal laws: gambling statutory construction of criminal laws: Hobbs Act; i.e., 18 USC 1951 statutory construction of criminal laws: immigration (cf. immigration and naturalization) statutory construction of criminal laws: internal revenue (cf. Federal Taxation) statutory construction of criminal laws: Mann Act and related statutes statutory construction of criminal laws: narcotics includes regulation and prohibition of alcohol statutory construction of criminal laws: obstruction of justice statutory construction of criminal laws: perjury (other than as pertains to statutory construction of criminal laws: false statements) statutory construction of criminal laws: Travel Act, 18 USC 1952 statutory construction of criminal laws: war crimes statutory construction of criminal laws: sentencing guidelines statutory construction of criminal laws: miscellaneous jury trial (right to, as distinct from extra-legal jury influences) speedy trial miscellaneous criminal procedure (cf. due process, prisoners' rights, comity: criminal procedure)