PER CURIAM.
Appellant, a prisoner in the United States Penitentiary at Leavenworth, Kansas, appeals from an order dismissing his habeas corpus petition without a hearing. The essence of his contention is that after revocation of his parole and return to prison, he was entitled to have credited against his sentence the time during which he was on parole, because he was in constructive custody of the Attorney General of the United States. This same argument was rejected by this court in Weathers v. Willingham, 356 F.2d 421. Sentence can be served only by imprisonment or by unrevoked parole.
Affirmed.