Investigators are poring over a wealth of evidence to find out who tried to detonate a car bomb in Times Square - New York's bustling entertainment area.
The bomb, described as "amateurish", consisted of propane tanks, fireworks, petrol and a clock device. It was planted in a sports utility vehicle.
NYC police commissioner Ray Kelly said there was no evidence to support a Taliban link to the bomb attempt.
It followed a claim by the Pakistani Taliban early on Sunday.
In a video message allegedly released by the Pakistani Taliban, the militants said it was a revenge attack for the deaths of its leader and the leader of al-Qaeda in Iraq.
At a news conference on Sunday, Mr Kelly said the device in the Nissan Pathfinder consisted of two clocks connected by wires to a can, which they believed was the detonator, propane tanks and a gun locker.
I pray the American authorities hunt down and subdue the people who did this before they get a chance to actually kill somebody. Thank God no-one was hurt.
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