Al-Qaeda claimed the failed December 25 bombing of a US-bound aircraft in a statement picked up by US monitors Monday as the jihadists threatened attacks on Western targets and Yemen vowed no let-up in its campaign against them.

Al-Qaeda's Arabian peninsula franchise acknowledged in the posting on the Internet that a "technical fault" had caused the failure of the plot against Friday's Northwest Airlines flight from Amsterdam to Detroit, SITE Intelligence said.

The statement which was accompanied by a picture of suspected would-be bomber Umar Farouk Abdulmutallab boasted the "Nigerian brother" broke all security barriers for his operation, dispelling the "great myth" of American intelligence.

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