New York City's police commissioner said Sunday that authorities are examining several leads in the failed Times Square car bombing that would have caused a "significant fireball," focusing closely on a surveillance video that captured a man fleeing the scene.
Commissioner Ray Kelly said it was "the intent of whoever did this to cause mayhem, create casualties" and noted that some munitions of the potentially powerful bomb detonated inside the SUV parked in Times Square on Saturday.
A monitoring group said Sunday that the Pakistani Taliban claimed responsibility for the bomb but Kelly said there is "no evidence" linking the group to the bomb, which prompted thousands of tourists to be cleared from the streets for 10 hours while the explosive was dismantled.
The Pakistani Taliban allegedly posted a one minute, 11 second video, saying the attack is revenge for the death of its leader, Baitullah Mehsud, and the recent slayings of the top leaders of Al Qaeda in Iraq -- Abu Omar al-Baghdadi and Abu Ayyub al-Masri -- who were killed by U.S. and Iraqi troops last month north of Baghdad. The tape makes no specific reference to the attack; it does not mention that it was a car bomb or that it took place in New York City.
Kelly said during a press conference Sunday that the NYPD is analyzing a surveillance video showing a unidentified white male in his 40's fleeing the scene. Kelly said the man is seen in the footage shedding a dark-colored shirt in an alley and putting it in a bag, revealing a red one underneath.
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The police commissioner said that the identity of the vehicle's owner has been confirmed, but he declined to release it. He also said that authorities are traveling to Pennsylvania on Sunday to examine video captured by a tourist that may contain footage of the suspect.
NYPD Deputy Commissioner Paul Browne told FoxNews.com that the vehicle was taken to a forensics lab in Queens, N.Y., where it is being examined for fingerprints, hairs and fibers. All bomb components were taken to a separate facility in Bronx, N.Y., Browne said.
Homeland Security chief Janet Napolitano said on "Fox News Sunday" that federal and local law enforcement are examining fingerprints recovered from the SUV.
Investigators removed three propane tanks, fireworks, two filled five-gallon gasoline containers, two clocks with batteries, a wrist watch, a cell phone, electrical wire and other components from the back of the Nissan Pathfinder, Kelly said. A black metal box resembling a gun locker, which was detonated off site, contained "eight bags of an unknown substance as well as a bird's nest of wires and firecrackers," he said. Kelly added that he unidentified substance was "granular in nature" and had the "look and feel of fertilizer."
"We avoided what we could have been a very deadly event," Mayor Michael Bloomberg said early Sunday morning. "It certainly could have exploded and had a pretty big fire and a decent amount of explosive impact."
Bloomberg called the explosive device "amateurish" and Kelly said the explosives were consumer-grade fireworks but could have caused huge damage on a block of Broadway theaters and restaurants teeming with tourists.
Firefighters who arrived shortly after the first call heard a popping sound, said Fire Commissioner Sal Cassano, who described the sound as not quite an explosion.
Kelly said a surveillance video showed the car driving west on 45th Street before it parked between Seventh and Eighth Avenues. Police were looking for more video from office buildings that weren't open at the time.
"The full attention of city, state and federal law enforcement will be turned to bringing the guilty party to justice in this act of terrorism," Gov. David Paterson said in a statement. Bloomberg did not describe it as an act of terrorism.
A T-shirt vendor alerted police to billowing smoke coming from the back of the vehicle at about 6:30 p.m. ET, the height of dinner hour as theatergoers rush to eat before Saturday night shows begin.
Smoke was coming from the car, its hazard lights were on and "it was just sitting there," said Rallis Gialaboukis, 37, another vendor who has hawked his wares for 20 years across the street.
A white robotic police arm broke windows of the dark-colored Pathfinder to remove any explosive materials. A Connecticut license plate on the vehicle did not match up, Bloomberg said. Police interviewed the Connecticut car owner, who told police he had sent the plates to a nearby junkyard, Bloomberg said.
Heavily armed police and emergency vehicles shut down the city's busiest streets, choked with taxis and theatergoers on one of the first summer-like days of the year.
Shelly Carlisle, of Portland, Ore., said police crowded into her Broadway theater after the curtain closed on "Next to Normal," a show on the same block where the SUV was found.
"At the end of the show, the police came in. We were told we had to leave," Carlisle said. "They said there was a bomb scare."
The car was parked on 45th Street, and the block was closed between Seventh and Eighth avenues as a precaution, police said. Times Square lies about four traffic-choked miles north of where terrorists bombed the World Trade Center in 1993, then laid waste to it on Sept. 11, 2001.
The block that was closed is one of the prime blocks for Broadway shows, with seven theaters housing such big shows as "Billy Elliot" and "Lend Me a Tenor."
The curtain at "God of Carnage" and "Red" opened a half-hour later than usual, but the shows were not canceled, said spokesman Adrian Bryan-Brown.
Katy Neubauer, 46, and Becca Saunders, 39, of Milwaukee, were shopping for souvenirs two blocks south of the SUV when they saw panicked crowds.
"It was a mass of people running away from the scene," Neubauer said.
Said Saunders: "There were too many people, too many cops. I've never seen anything like it."
Bloomberg left early from the White House correspondent's dinner Saturday night. President Obama, who attended the annual gala, praised the quick response by the New York Police Department, White House spokesman Nick Shapiro said.
He has also directed his homeland security and counterterrorism adviser, John Brennan, to advise New York officials that the federal government is prepared to provide support.
Brennan and others will keep Obama up to date on the investigation, Shapiro said.
The FBI Joint Terrorism Task Force in New York responded along with the NYPD, said agent Richard Kolko.
"We have no idea who did this or why," the mayor said Sunday, but said that the city is always a top terrorism target. The latest threat came last fall when air shuttle driver Najibullah Zazi admitted to a foiled homemade bomb plot aimed at the city subway system.
"These things invariably ... come back to New York," Bloomberg said.
The theater district in London was the target of a propane bomb attack in 2007. No one was injured when police discovered two Mercedes loaded with nails packed around canisters of propane and gasoline.
Officials said the device found Saturday was crudely constructed, but Islamic militants have used propane and compressed gas for years to enhance the force of explosives. Those instances include the 1983 suicide attack on the U.S. Marines barracks at the Beirut airport that killed 241 U.S. service members, and the 2007 attack on the international airport in Glasgow, Scotland.
In 2007 the U.S. military announced that an Al Qaeda front group was using propane to rig car bombs in Iraq.
Times Square has been a frequent target, if not for potential terrorists, then for rabble-rousers.
In December, a van without license plates parked in Times Square led police to block off part of the area for about two hours. A police robot examined the vehicle, and clothes, racks and scarves were found inside.
In March 2008, a hooded bicyclist hurled an explosive device at a military recruiting center in the heart of Times Square, producing a flash, smoke and full-scale emergency response. No suspect was ever identified.
Police have spent years trying to crack down on street hustlers and peddlers preying on tourists. But there have been two major gunfights in recent months. A street hustler armed with a machine pistol exchanged shots in December, shattering a Broadway theater ticket window, before police fatally shot the man.
Four separate instances of shootings and more than 50 arrests on a mile-long stretch of Manhattan last month around Times Square prompted the mayor to call the mayhem "wilding."
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FoxNews.com's Joshua Rhett Miller, Jana Winter and The Associated Press contributed to this report.