An audio tape allegedly created by Osama bin Laden says he came up with the idea for the Christmas Day attack by Umar Farouk Abdulmutallab.
In the tape he claims the attack was meant to reiterate earlier messages he has sent to the US, such as those delivered on 9/11, and that attacks will continue as long as America continues to support Israel.
US officials and researchers say the claim lacks hard evidence, and that big Laden is just trying to appear relevant. Still, he does have a history of connections to al-Qaida in Yemen, where Abdulmutallab was allegedly trained for the attack.
