A day before driving a vehicle with a rigged homemade bomb into Times Square, a Pakistani-American made a test drive into the heart of the city and dropped off a getaway car blocks from his target, a law enforcement official told The Associated Press.
The official's account of Faisal Shahzad, who took no visitors in the shabby apartment where he hoarded a gun and low-grade fireworks for months, bolsters a growing theory that he prepared a terrorist attack in the United States on his own once he moved back to the U.S. from five months in his native Pakistan, law enforcement officials say.
But while no other suspects have been identified in the U.S., federal authorities are seriously investigating whether foreign groups in Pakistan or elsewhere financed the 30-year-old ex-budget analyst's failed terrorist plot against New York, two law enforcement officials have told the AP.
One of the officials, speaking on condition of anonymity because of the sensitivity of the investigation, has said one funding source under investigation is the Pakistani Taliban. A video, supposedly released by the Pakistani Taliban claimed responsibility for the failed bomb attack, but a spokesman for the group denied any connection to Shahzad, although he praised him for a "noble job."
In Pakistan on Thursday, security officials said U.S. law enforcement officers have joined them in questioning four alleged members of another militant group, Jaish-e-Mohammad, which has been linked to the 2002 killing of Wall Street Journal reporter Daniel Pearl, over possible links to Shahzad. The security officials also talked to the AP on condition of anonymity because they were not authorized to speak to the media.
Pakistan's ambassador, Husain Haqqani, said Wednesday in Massachusetts that an investigation into Shahzad's links to Pakistan was inconclusive so far. ``I think it's premature to start identifying groups and individuals with whom he might have trained,'' he said.
Shahzad, of Bridgeport, Connecticut, remained in custody on terrorism and weapons charges, accused of trying to detonate a crude bomb of gasoline, propane and low-grade fireworks on a crowded Saturday night in Times Square. Officials said he has been cooperating with investigators since he was pulled off a Dubai-bound plane in New York on Monday. No court appearance has bee scheduled, federal prosecutors said Thursday.
``We will continue to pursue a number of leads as we gather intelligence relating to this attempted attack,'' U.S. Attorney General Eric Holder told a Senate appropriations subcommittee hearing Thursday.
Authorities investigating the failed attack have said that Shahzad made quick preparations to buy supplies for the homemade bomb, including the used sport utility vehicle for which he shelled out 13 $100 bills a week earlier.
Police Commissioner Raymond Kelly said in Washington that Shahzad bought a gun in March found in his Isuzu at Kennedy Airport, suggesting that he was moving ahead with the bombing plot shortly after returning from Pakistan.
``It appears from some of his other activities that March is when he decided to put this plan in motion,'' Kelly told a Senate panel Wednesday. ``It may well have been an indicator of putting something catastrophic in motion.''
A relative in Pakistan said Wednesday that Shahzad had been talking about the problems of Muslim in Iraq and Afghanistan on his last visit to Pakistan, and that Shahzad's sensibilities had changed over several years in the U.S.
``When he was here, he was not religious-minded. But he was when he came back from the United States,'' said Nasir Khan, a relative in the family's ancestral village of Mohib Banda in northwest Pakistan.
U.S. officials have said they are been unable to verify whether Shahzad trained to make bombs at a terrorist camp in Pakistan, which Shahzad told authorities he did, according to the federal complaint against him.
Kevin Barry, a retired member of the New York Police Department's bomb squad, told the AP the design of the Times Square car bomb _ which included fertilizer and an improvised fireworks-and-powder detonator _ showed Shahzad had sufficient training to understand the basics of rigging an explosive device. But the bomb, which included fertilizer that was incapable of exploding, was a failure.
``He was trained, but he certainly didn't graduate at the top of the class,'' said Barry. ``He had the design and the idea.''
Officials have said the gray 1993 Nissan Pathfinder loaded with firecrackers, gasoline and propane could have created a huge fireball and killed nearby tourists and Broadway theatergoers if it had gone off successfully.
Shahzad first drove the Pathfinder to Times Square from Connecticut on April 28, apparently to figure out where would be the best place to leave it later, according to a law enforcement official who briefed a reporter on the dress rehearsal. He then returned April 30 to drop off a black Isuzu, the official said.
When he left Times Square on Saturday, he discovered he left a chain of 20 keys including those to the getaway car and his home in Connecticut in the SUV, and had to take the train home, the official told the AP.
Investigators had already started searching for suspects, when he returned to the scene on Sunday with a second set of keys to pick up the Isuzu, parked about eight blocks from the car bomb site, the official said.
Police recovered surveillance video of Shahzad at Times Square moments after the attack, and he's seen in other video in Pennsylvania buying fireworks. Neither videotape has been released.
On March 8, Shahzad bought six to eight boxes each containing 36 Silver Salute M88 fireworks from Phantom Fireworks in Matamoras, Pennsylvania, said store vice president William Wiemer. Each M88 has firepower that is less than one-sixth the size of an aspirin, the company said.
``The M88 he used wouldn't damage a watermelon. Thank goodness he used that,'' said Bruce Zoldan, the company's president.
Shelton police said Shahzad legally bought a Kel-Tec rifle from a dealer after passing a criminal background check and a 14-day waiting period. The owner of the gun shop declined to comment.
In a city still jittery from the failed car bomb driven into one of its most famous neighborhoods, a truck abandoned near a toll booth to a bridge caused alarm late Wednesday when a bridge authority officer believed he smelled gasoline coming from it and saw a man flee the truck. But the truck turned out to be empty and not a threat, police said.
Meanwhile in Paris, French police have detained a French-Moroccan man suspected of heading an al-Qaida support cell that planned to send militants to fight in Afghanistan and Iraq and was plotting terror attacks in Morocco.
An official at the DCRI, the French counterespionage agency, says Ahmed Sahnouni, who is 40 years old and has dual nationality, was arrested last week in a Paris suburb and has been brought before a prosecutor. The official spoke anonymously because of the nature of his job.
Moroccan police say Sahnouni headed a cell of 24 suspected terrorists arrested last month in the North African kingdom, where they were plotting large terror attacks.
View The Christian Science Monitor's photos of the 10 American Jihadis.