A suspect has today been taken into custody in connection with the recent failed Times Square car bomb attack.
The suspect was identified as Faisal Shahzad, who is being held in New York.
US Attorney General Eric Holder said Customs agents arrested Shahzad in connection with the failed plot.
Mr Holder described Shahzad, who hails originally from Pakistan, as an American citizen.
The propane-and-petrol bomb was found on Saturday in an SUV parked near a Broadway theatre showing 'The Lion King'.
A bomb squad dismantled it.
The area was evacuated for 10 hours. No one was hurt.
Shahzad was identified at midnight local time at John F. Kennedy International Airport and was stopped, said the official.
Law enforcement officials said the suspect recently returned from a trip to Pakistan and bought the 1993 Nissan Pathfinder used in the failed car bomb three weeks ago and paid cash.
Police said the bomb could have produced "a significant fireball" and sprayed shrapnel with enough force to kill pedestrians and knock out windows.
The SUV was parked on a street lined with Broadway theatres and restaurants and full of people out on a Saturday night.
The SUV was captured on video crossing an intersection at 6.28pm local time on Saturday. A vendor pointed out the Pathfinder to an officer about two minutes later.
Times Square, clogged with tourists on a warm evening, was shut down for 10 hours.