A man suspected of attempting to detonate a car bomb in New York City has been arrested.
US Attorney General Eric Holder named the man as Faisal Shahzad, a US citizen of Pakistani origin.
He was arrested at John F Kennedy airport in New York attempting to board a flight to Dubai, Mr Holder said.
The vehicle was left in Times Square on Saturday with a bomb made from fertiliser, fireworks, petrol and propane gas tanks.
The bomb was discovered and dismantled before it could explode.
Mr Holder told a news conference that investigators were pursuing "a number of leads", adding: "We will not rest until we have brought everyone responsible to justice."
He urged the American people to "remain vigilant" and report anything suspicious to the authorities.
A dark-coloured Nissan Pathfinder was left parked in Times Square on Saturday evening with its engine running and its hazar
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