JUDGMENT
PER CURIAM.
This appeal was considered on the record from the United States District Court for the District of Columbia and on the brief filed by the appellant. The court has determined that the issues presented occasion no need for an opinion. See Fed. R. App. P. 36; D.C.Cir. Rule 36(b). It is
ORDERED AND ADJUDGED that the district court’s order filed August 29, 2000, be affirmed substantially for the reasons stated by the district court therein. The district court properly dismissed the case. See Heck v. Humphrey, 512 U.S. 477, 114 S.Ct. 2364, 129 L.Ed.2d 383 (1994) (section 1983 claim for damages which necessarily challenges fact or duration of confinement is not cognizable unless the confinement previously has been invalidated).
The Clerk is directed to withhold issuance of the mandate herein until seven days after disposition of any timely petition for rehearing or petition for rehearing en banc. See Fed. R.App. P. 41(b); D.C.Cir. Rule 41.