NATION IN BRIEF : WASHINGTON, D.C. : Rocky Flats Security Breakdown Revealed

The Energy Department announced that it has suspended handling of all plutonium at its Rocky Flats, Colo., nuclear weapons plant because of security breakdowns. Rocky Flats, which produces plutonium triggers for nuclear weapons, has had its manufacturing operations suspended since December because of safety and environmental problems. The latest order applies to all handling and movement of nuclear materials, the department said. The announcement, reported by the Washington Post in its Saturday editions, gave no details of the security breaches.