George O. Parker, the plaintiff below appeals from the entry of what was styled below as a summary judgment in favor of the appellees, McKeithen and others. Decision was withheld to await the result of other litigation and the appeal is now ripe for our decision. In our view, the order entered below amounted to a dismissal for failure to state a claim, an erroneous disposition. Since summary judgment is now a proper disposition, we vacate the original judgment below and remand for the entry of summary judgment upon new and independent grounds.

The suit by Parker was based on injuries received by him while an inmate of the Louisiana State Penitentiary at Angola, Louisiana. Named as defendants were the state and numerous Louisiana State officials ranging from Governor McKeithen to the Warden at Angola.1 Suit for damages in excess of one million dollars was brought under the federal civil rights, Title 42 U.S.C. Secs. 1981 and 1983 et seq., with jurisdiction claimed under Title 28 U.S.C. Secs. 1331 and 1343. The complaint charged that due to the gross negligence of the prison officials acting under color of state statutes, usages and customs, Parker was deprived of his Eighth Amendment right to be free from cruel and unusual punishment2 and his Fourteenth Amendment right to equal protection of the laws.

The underlying facts are as follows.3 On September 15, 1969, the date of his injury, Parker was a medium security inmate in Camp H. of the Louisiana State Penitentiary at Angola. Counting time allowed for good behavior, Parker was due to be released from Angola less than a week later, September 21, 1969. On the morning of September 15th, inmate Willie Edmonson, also billeted in Camp H, made his way from the second floor of the building in which he and Parker were domiciled to Parker's bed on the first floor. Parker was asleep. Edmonson stabbed Parker in the abdomen several times with a homemade knife, inflicting serious injuries. Parker was hospitalized at the Earl K. Long Hospital at Baton Rouge for two months.

The original complaint below alleged that Parker's stabbing by Edmonson was the result of gross negligence on the part of prison officials in that: (1) the officials were aware that inmates at Angola-and Edmonson in particular-made and were regularly in possession of various types of weapons, including knives similar to the one used by Edmonson on Parker, but failed to conduct inspections therefor and failed to maintain protective safeguards to prevent their manufacture; (2) prison officials were aware that Edmonson was a violent person with a record of prior attacks on fellow inmates; (3) prison officials were aware that Edmonson had made specific threats against Parker shortly before the date of the attack; and (4) prison officials had refused to isolate Parker from Edmonson and other inmates but permitted him to remain in an open type dormitory.

Defendants moved for summary judgment alleging that Parker had not presented a substantial federal claim and pointing out that he had filed a suit identical in all respects save the allegations of violations of federal law in Louisiana state court. Following a hearing on the motion, summary judgment was granted as to all defendants, written reasons therefor being assigned by opinion-order.

The district court granted summary judgment in favor of the Governor, McKeithen, C. C. Aycock, President Pro Tempore of the state senate and Lieutenant Governor, and John S. Garrett, Speaker of the House of Representatives on the ground of their immunity from suit for acts or omissions done within the sphere of legitimate executive or legislative activities.4 As to the Warden, Henderson, the Assistant Warden, Hoyle, and the Deputy Warden, Dees, the district judge asserted that, although since Monroe v. Pape, 1961, 365 U.S. 167, 81 S. Ct. 473, 5 L. Ed. 2d 492, courts have differed as to whether unintentional negligent conduct under color of state law will support a claim under Sec. 1983, he followed the view that under exceptional circumstances, unintentional conduct by prison officials may support such a claim. However, he continued, Parker had failed to state such a claim because he alleged only "an isolated incident of negligent failure to protect." Additionally, he considered himself bound by a federal "hands off" policy explicated in numerous cited cases,5 of refusing to review matters of prison administration, "including the discipline, treatment and care of those confined" unless "exercised in such a manner as to constitute clear abuse or caprice upon the part of prison officials", citing Williams v. Field, 9 Cir. 1969, 416 F.2d 483, cert. denied, 1970, 397 U.S. 1016, 90 S. Ct. 1252, 25 L. Ed. 2d 431. He found nothing in the record to indicate bad faith or oppressive motive on the part of the defendant prison officials in failing to protect Parker, and hence no violation of Eighth or Fourteenth Amendment rights.

Our review starts with noting that we are not bound by the label which the district court attached to its action. Tuley v. Heyd, 5 Cir. 1973, 482 F.2d 590. As in that case, the district court here erroneously labeled as a summary judgment what was in fact a dismissal, either for failure to state a claim upon which relief could be granted, F.R.Civ.P. Rule 12(b) (6), or alternatively for reasons apparently based on principles of federal-state comity. We treat the district court's order as a dismissal in our analysis.

We consider first the district court's ruling that failure to allege "more than an isolated incident of negligent failure to protect" provided grounds for dismissal under F.R.Civ.P. Rule 12(b) (6). The district court cited no authority for such a test of the sufficiency of a complaint under Sec. 1983, and we know of none. Indeed, there are several cases from this Circuit in which claims under Sec. 1983, alleging violation of Eighth Amendment rights arising from negligence of state officials have been recognized.6 We hold that a dismissal in the instant case for failure to state a claim under Sec. 1983 was in error, and the judgment of the district court based on those grounds must be vacated.

We next consider the correctness of the district court's action in dismissing the suit on the further basis that federal courts prefer to abstain on grounds of comity from reaching the merits of a challenge to the acts of state prison officials. While it is true that federal courts are usually reluctant to interfere in matters of prison administration, Sostre v. McGinnis, 2 Cir. 1971, 442 F.2d 178, 191, cert. denied, 404 U.S. 1049, 92 S. Ct. 719, 30 L. Ed. 2d 740, cert. denied, Oswald v. Sostre, 405 U.S. 978, 92 S. Ct. 1190, 31 L. Ed. 2d 254, it can no longer be correctly asserted that the federal courts are unwilling in all situations to review the actions of state prison administrators to determine the existence of possible violations of constitutional rights. Anderson v. Nosser, supra, Roberts v. Williams, supra, Whirl v. Kern, supra. For this reason we disapprove also the action of the district court to the extent that it can be considered a dismissal on abstention grounds.

In trying to determine what disposition is now to be made of this appeal, we note first that the plaintiff-appellant has sought and received a final adjudication of the question of negligence on the part of prison officials in a separate suit maintained in the courts of the State of Louisiana, Parker v. State, 1971, 19th Judicial District Court (June 29, 1972, Nos. 143, 418) aff'd, 1972 La. App., 261 So. 2d 364, aff'd 1973, La., 282 So. 2d 483, on rehearing, La.1973, 282 So. 2d 488, cert. denied - U.S. -, 94 S. Ct. 724, 38 L. Ed. 2d 550 [No. 73-597, 42 U.S.L.W. 3552, Dec. 10, 1973], filed 42 U.S.L.W. 3227 (No. 73-597, Oct. 4, 1973). In the state courts the decision was against the plaintiff on the question of negligence. The trial court applied the test earlier established in St. Julian v. State, La.App.1957, 98 So. 2d 284, 285, for determining whether prison officials have been negligent in allowing prison inmates to inflict harm upon one another:

The general rule gathered from the cases is that in order to hold the State or the employees of a state who have charge of a prison liable for injury to one inmate inflicted by another inmate, there must be knowledge on the part of such officers in charge that such injuries will be inflicted, or good reason to anticipate such, and following that, there must be showing of negligence on the part of these officials in failing to prevent the injury. (Citing cases).

The state trial court found insufficient the plaintiff's evidence that prison officials knew or should have known that Parker was to be stabbed by Edmonson and dismissed plaintiff's suit.

On appeal, the Louisiana Court of Appeals affirmed the trial court. The court of appeals recognized that prison officials had been informed of the threats made by Edmonson against Parker, but noted that such threats were commonplace in the compound in which Parker was an inmate. The court felt compelled to draw a distinction between mere knowledge of the existence of threats and the existence of actual danger of execution of the threat. The court of appeals found that the trial court had not erroneously concluded that Edmonson's threat against Parker was properly treated by prison officials as little more than an idle threat by a temporarily jealous prisoner with homosexual tendencies against a male paramour with like proclivities. Parker was himself known to have violent tendencies since he was serving a prison term for manslaughter in the fatal stabbing of a male paramour. The population of Camp H was composed of similar prisoners and was constantly a source of petty quarrels, jealousies, bickerings and threats of various kinds. The court mentioned other grounds for upholding the decision of the trial court, inter alia, the fact that, upon being apprised of Edmonson's threats, two prison officers made shakedown searches of Edmonson and his bunk area to determine whether Edmonson was in possession of any weapons.

The Louisiana Supreme Court affirmed the decisions below, again citing the test established in St. Julian v. State, supra, as controlling. The Supreme Court found that the prison officials had taken reasonable measures, including the search of Edmonson and the counselling of both prisoners, to prevent harm to Parker. On rehearing, the Louisiana Supreme Court adhered to its original opinion. 282 So. 2d 488.

We must consider, then, the effect, if any, which the litigation of the issue of negligence in the state courts of Louisiana is to have upon the determination of the plaintiff-appellant's negligence-based Sec. 1983 suit in the federal courts. As this court noted in Hyman v. Regenstein, 5 Cir. 1958, 258 F.2d 502, 510, cert. denied sub nom., Hyman v. Continental Illinois National Bank, 1959, 359 U.S. 913, 79 S. Ct. 589, 3 L. Ed. 2d 575: "It, of course, is well settled law that a fact decided in an earlier suit is conclusively established between the parties and their privies, provided it was necessary to the result in the first suit." This is merely a statement of the doctrine of collateral estoppel by judgment more fully enunciated by our citation, in Hyman v. Regenstein, supra, to American Jurisprudence, Judgments, Section 371:

"'It is a fundamental principle of jurisprudence that material facts or questions which were in issue in a former action, and were there admitted or judicially determined, are conclusively settled by a judgment rendered therein, and that such facts or questions become res judicata and may not again be litigated in a subsequent action between the same parties or their privies, regardless of the form the issues may take in the subsequent action, whether the subsequent action involves the same or a different form of proceeding, or whether the second action is upon the same or a different cause of action, subject matter, claim, or demand, as the earlier action. In such cases, it is also immaterial that the two actions are based on different grounds, or tried on different theories, or instituted for different purposes, and seek different relief. * * *"'7 (Emphasis supplied)

We noted further in Hyman, supra, the potential dangers inherent in the doctrine of collateral estoppel, e. g., its "loose" application "to subsequent litigation having such a tenuous connection with the original controversy that application of the doctrine would work an injustice." 258 F.2d at 510. Thus we stated a limitation on the applicability of the doctrine:

"collateral estoppel by judgment is applicable only when it is evident from the pleadings and record that determination of the fact in question was necessary to the final judgment and it was foreseeable that the fact would be of importance in possible future litigation." Id. at 511.

Applying the doctrine of collateral estoppel to the situation in the instant case, with due regard for its limitations, we think it is clear that determination of the question of negligence was the fundamental issue in the state court litigation. Aside from the question of damages, it was the only issue in the state courts. Determination of the issue of negligence was necessary to the judgment in the state court proceedings.

The state district court concluded that Parker had introduced insufficient evidence to show fore-knowledge on the part of prison officials that Parker was to be attacked by Edmonson. Under the test established in St. Julian v. State, supra, a showing of knowledge was the necessary prerequisite to proof of negligence. Thus, failure to prove knowledge is fatal to proof of negligence. Where does this determination leave Parker's federal claim based on Sections 1981 and 1983?

. . . that the overall circumstances as herein alleged constitute gross negligence on the part of the State of Louisiana, its officials, the defendants, and all those persons associated with said prison and said persons are responsible unto petitioner for any and all injuries sustained while he was assigned and confined to said prison . . .

This quote manifests that Parker's civil rights violation claim is premised upon his allegation that the defendants were grossly negligent in failing to protect him from being stabbed by Edmonson. If the defendants were not negligent, Parker's Section 1981-1983 claims fail. It is at this juncture that the doctrine of collateral estoppel by judgment assumes control. The factual question of negligence was fully presented to the state courts, and Parker failed to introduce even sufficient evidence to prove the threshold element of knowledge, much less prove that the defendants were negligent. The state court thereupon dismissed Parker's suit with prejudice. We hold that the doctrine of collateral estoppel by judgment operates to prevent Parker from relitigating the issues of negligence in the federal courts. Hyman v. Regenstein, supra. The final decision of the courts of the State of Louisiana that the defendants did not have the fore-knowledge essential to a finding of their negligence estops Parker from litigating the question of negligence as a prerequisite to recovery on his suit under Title Section 1981 and 1983 of Title 42 U.S.C.

Having treated the order of the district court as a dismissal rather than as a granting of summary judgment for the defendants, we vacate that order, and remand to the district court with directions that summary judgment be entered for the defendants8 on the grounds that the plaintiff is collaterally estopped by the judgment in his suit in state court from raising the essential issue of negligence in the court below.

Vacated and remanded with directions.