(Reuters) Scotland Yard and the Federal Bureau of Investigation are investigating more than a hundred bomb threats made to Jewish groups in the United States and Britain since Jan. 7, US and UK law enforcement and Jewish community officials said.

Investigators said there is evidence that some of the US and British bomb threats are linked. According to people in both countries who have listened to recordings of the threats, most of the them have been made over the telephone by men and women with American accents whose voices are distorted by electronic scramblers.

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