[Update] A naturalized U.S. citizen from Pakistan was arrested overnight in the Times Square bombing investigation. Faisal Shahzad, 30, claimed to have acted alone in the attempted bombing, said a law enforcement source with knowledge of the investigation. The Joint Terrorism Task Force investigating the bombing attempt has said it's considering the possibility that the attempt involved more than just a "lone wolf." Read the full story and see the developments unfold on CNN's This Just In blog
(CNN) - Investigators in the foiled carb bomb attack in New York's Times Square are evaluating a video released less than 24 hours after the incident by the leader of the Pakistani Taliban, and it has raised questions about whether militants could have been behind the attempted bombing.
A speaker claiming to be Hakimullah Mehsud vowed attacks on major U.S. cities in the nearly nine-minute video. It was his first appearance since reports of his death in a drone strike, according to IntelCenter, a think tank that tracks terrorist groups.
"The time is very near when our fedayeen (fighters) will attack the American states in their major cities," the speaker in the video said. "Our fedayeen have penetrated the terrorist America, we will give extremely painful blows to the fanatic America."
A senior U.S. military official told CNN Monday there is still no "credible evidence" at the early stages of the investigation that the Pakistani Taliban was responsible for the Times Square bomb incident.
A U.S. official also told CNN it would be "surprising" if the group was behind the attack in New York. The official cannot be identified because of the sensitivity of the information, but is directly aware of the latest U.S. understanding of the incident.
The group has never shown "trans-national capabilities" like other groups such as al Qaeda, but such a possibility is "not something one can rule out at this early stage." The official also said there was no intelligence information beforehand of a Pakistani Taliban operation.