II.
On appeal, appellants contend that their cause of action did not accrue until March, 1981, and that, therefore, this action is timely. We disagree.
Appellants allege that their cause of action arises under the First and Fifth Amendments and that jurisdiction is based on 28 U.S.C. § 1331(a). Since neither the amendments nor the federal statute contain a statute of limitations, the most closely analogous state statute of limitations applies. Johnson v. Railway Express Agency, 421 U.S. 454, 462, 95 S.Ct. 1716, 1721, 44 L.Ed.2d 295 (1975).
We find, and the parties do not dispute, that the statute of limitations applicable to this case is Ya.Code § 8.01-243 (1977 Rep.Vol.), which establishes a two-year limitations for personal injury actions and a five-year limitations for property damage actions. In addition, we find that the district court correctly determined that the time when a cause of action accrues is governed by federal, not state, law. Campbell v. Haverhill, 155 U.S. 610, 15 S.Ct. 217, 39 L.Ed. 280 (1895); Bridgford v. United States, 550 F.2d 978, 981 (4th Cir.1977); Portis v. United States, 483 F.2d 670, 672 n. 4 (4th Cir.1973). Furthermore, the district court was correct in holding that the statute of limitations does not begin to run until the plaintiff discovers, or by the exercise of due diligence should have discovered, the facts forming the basis of his cause of action. Holmberg v. Armbrecht, 327 U.S. 392, 396-97, 66 S.Ct. 582, 584, 90 L.Ed. 743 (1946); Fitzgerald v. Seamans, 553 F.2d 220 (D.C.Cir.1977).
In Fitzgerald v. Seamans, supra, the plaintiff brought suit in 1974 against federal officials alleging that they conspired to violate his constitutional and statutory rights by wrongfully terminating his employment with the Air Force in 1970 in retaliation for his congressional testimony. The plaintiff contended that his action was not barred by the applicable three-year statute of limitations because the defendants fraudulently concealed their unconstitutional acts. The District of Columbia Circuit held that Fitzgerald’s action was time-barred since documents filed by him in a 1970 proceeding before the Civil Service Commission “demonstrate[d] that, by 1970, he had facts sufficient to put him on notice of the conspiracy by the Air Force appellees to retaliate against him for his congressional testimony.” Id. at 228.
As in Fitzgerald v. Seamans, supra, documents filed by Futuronics in 1976 before the Armed Services Board of Contract Appeals and in the Court of Claims reveal that appellants were “on notice,” at least by that time, of appellees’ alleged constitutional torts. In 1976, appellants knew that the government’s technical data package was allegedly inadequate, that adjustments had been denied and that progress payments had been withheld because Futuronics alleged'this in its complaint filed in the Court of Claims on November 10, 1976. They knew then of the DOD internal memorandum concerning the decision “to step back and let the contractor go bankrupt” because Futuronics quoted from it in its complaint dated October 18, 1976, before the Armed Services Board of Contract Appeals. They knew in 1976 that Futuronics was bankrupt because Futuronics filed a petition under Chapter XI of the Bankruptcy Act on January 3, 1975. They knew that the ultimate issue before the Armed Services Board of Contract Appeals was “whether the Government caused [Futuronics’] bankruptcy” because the Board consolidated all of Futuronics’ appeals into one proceeding for trial and resolution of that issue.
In the present action, the gravamen of the complaint is that appellees conspired to cause the financial destruction of Futuronics. Appellants’ allegations of tortious conduct are necessarily intertwined with their