11.   A news blackout was imposed on the case until Thursday.

12.   A news blackout was imposed on the meeting.

13.   A news blackout was imposed as the investigation continued.

14.   Air raid sirens have been going off nightly and blackouts have been imposed.

15.   Air raid sirens sounded off nightly and blackouts have been imposed, government officials there said.

16.   As in the previous four negotiating sessions between Solana and Primakov, a news blackout was imposed.

17.   Because the kidnappers threatened to kill him if the family went to the media, a news blackout was imposed.

18.   Because of scare electricity supply, California power grid operators imposed rolling blackouts on utility customers in January and March.

19.   Chris Mazivanhanga of Associated Press Television said a news blackout was imposed after police met with villagers.

20.   Energy Minister Pete Hodgson has warned that without the savings, rolling blackouts will be imposed by late September.