By Henry Goldman and Allison Bennett May 3 (Bloomberg) — New York City police interviewed the owner of a bomb-carrying sport-utility vehicle discovered in Times Square, Mayor Michael Bloomberg said. He pledged to add scores of video cameras to bolster security in the most populous U.S. city. The 1993 Nissan Pathfinder’s owner was tracked through the car’s vehicle identification number, which was stripped from the dashboard, Police Commissioner Raymond Kelly said. The number is typically stamped on other parts of a car or truck, such as the engine block. “We have no information whatsoever, no sense that they are involved,” Bloomberg said of the SUV’s owner. “We’re talking with everybody. We’ll continue to do that.” The attempted bombing “was intended to terrorize, and I would say that whomever did that would be categorized as a terrorist,” White House press secretary Robert Gibbs said. U.S. officials still don’t know who was responsible, he said. Several people in a plot with international links may have coordinated the incident, the Washington Post said, citing unidentified officials in President Barack Obama ’s administration. Bloomberg had “no immediate comment” on the report, said Jason Post , a spokesman for the mayor. The city will spend $110 million to add video cameras in Midtown Manhattan between 30th and 60th Streets, from the Hudson River to the East River, to expand a security network centered on Wall Street downtown, Bloomberg said today. ‘Whatever Is Necessary’ “I commit to you we will spend whatever is necessary in either federal or, if need be, city funds, to complete this project and to protect New York,” Bloomberg, 68, told reporters at a press conference in the Bronx. U.S. Senator Charles Schumer will seek federal funding for a system using security cameras and license-plate readers to record and track “every vehicle moving between 34th and 59th Streets,” the New York Democrat said in a press release. A man described as about 40 years old was seen on a neighborhood surveillance camera as he hurried through Shubert Alley , a pedestrian walkway between 44th and 45th Streets, steps from where the explosive-laden car was parked May 1, Kelly said. Red T-Shirt The man can be seen on the video removing a dark shirt, revealing a red T-shirt underneath, Kelly said. He placed the outer shirt in a bag and walked from the scene “in a furtive manner,” the commissioner said. Police also collected images of the SUV as it traveled along 45th Street at Times Square before being left at a curb near several Broadway theaters, the mayor said. While the police department has 82 cameras in the Times Square area, there are many more, he said. “There are hundreds of cameras, mostly in private buildings,” Bloomberg said. “This is a function that government should provide and to the extent that the private sector has information that would augment that, that is great, and we certainly take that into account.” The 1,949-room Marriott Marquis , across the street from where the car was parked, said it was cooperating with authorities. “We did provide the authorities access to all video content as needed,” said Kathleen Duffy, a spokeswoman for Marriott International Inc.’s hotels in New York City. The Marriott Marquis evacuated 800 to 1,000 people to ballrooms for about seven hours during the bomb scare, she said. ‘My Home Town’ It’s too early to call the case a “terrorist incident” or to say “who might ultimately be responsible and who’s involved,” Attorney General Eric Holder told reporters in Arlington, Virginia, today, according to a Justice Department transcript. There are “a number of leads” in addition to surveillance video, he said. “New York remains a target,” Holder said. “There’s a determination by those terrorists to try to inflict damage on my home town.” Transit officials and some Times Square building owners said they had already upgraded security in the aftermath of the Sept. 11, 2001, terrorist attack on the World Trade Center. “NYC Transit has remained at the highest state of alert since 9/11, reminding employees to report any suspicious activity,” said Paul Fleuranges , a spokesman for New York City Transit, which operates the subways and buses. Heightened Awareness He cited an April 30 incident in which track workers spotted someone in a tunnel near Bowling Green in lower Manhattan and turned the individual in to police as “an example of that heightened state of awareness.” In response to the bombing attempt, the Transportation Security Administration began conducting operations at East Coast airports to find explosives in vehicles, a Department of Homeland Security official said. Authorities also were doing more random screenings as passengers went through security checkpoints and at departure gates, said the official, who requested anonymity. “The past five weeks, there’s been a noticeable increase in military and police,” said Scott Froseth, 30, a business consultant, in Manhattan’s Penn Station. He travels from Hartford, Connecticut, to Brooklyn every Monday. “Guys in fatigues with their hands on their guns. It’s the same as usual today.” New York City “should increase video surveillance,” said cabdriver Nana Sarfo, 41, a Bronx resident and Ghana native. Interviewed along Eighth Avenue in midtown Manhattan, Sarfo said he hadn’t seen police searching cars today. Tourist Video Police travelled to Pennsylvania, where a tourist reported that he may have unintentionally photographed the person while taking snapshots of Times Square, Kelly said. Investigators have “no evidence” that a group of Pakistani Taliban sympathizers were responsible for the attempt, although a self-described group took credit for it, Kelly said. He noted authorities have ruled out the group’s involvement in other attempted and successful attacks around the world after receiving similar messages in the past. “Cops aren’t going to make me feel any safer because we’re not addressing the source of the problem: what motivates these people,” said Pepe Palikis, 55, a cattle trader for Australian Agriculture Co. who travels from New York to Philadelphia via Penn Station three times a week. “Right now I’m more concerned with the U.S. dollar going down.” Improvised Explosive Investigators have examined bags of a granular material found in a gun box in the car, which they believe might be fertilizer, Kelly said. Timothy McVeigh used about 5,000 pounds of ammonium nitrate fertilizer ingredient in the improvised explosive device in the 1995 truck bombing of a federal building in Oklahoma City. The intended detonator of the Times Square bomb, Kelly said, was a 16-ounce can filled with consumer-grade fireworks. The car also held two five-gallon containers of gasoline and three propane tanks, wired with two clocks, the commissioner said. Obama , speaking in Louisiana where he had gone to inspect damage from the Gulf of Mexico oil spill, praised the city’s police and fire departments, the Federal Bureau of Investigation, and the street vendor who alerted police to the smoking car. ‘Every Step Necessary’ “My national security team has been taking every step necessary to ensure that our state and local partners have the full support and cooperation of the federal government,” Obama said. “We’re going to do what is necessary to protect the American people to determine who’s behind this potentially deadly act and to see that justice is done.” U.S. Homeland Security Secretary Janet Napolitano , in an interview on NBC’s “Today” show, said it’s “premature to rule in or out” that the bombing attempt is linked to international terrorism. Plans to host foreign ministers in New York at a United Nations conference on nuclear non-proliferation won’t be disrupted, said U.S. State Department spokesman Philip Crowley . The gathering, which will draw participants from Europe, the Middle East and Asia, starts May 4. Businesses Respond Among businesses stepping up security was Bank of America Corp. , whose 54-story tower is about two blocks from where the vehicle was parked. “Our corporate security team has increased uniform presence at One Bryant Park,” spokesman T.J. Crawford said in an e-mail. The building “was built with 9/11 in mind,” said its owner, Douglas Durst , co-president of The Durst Organization, in a phone interview. Completed in 2008, the structure “has extra-wide staircases, it has pressurized stairs to keep smoke out, and it’s surrounded by bollards,” or protective traffic guards, he said. Durst, whose properties also include the Conde Nast building at 4 Times Square, said his company had installed security cameras and refitted buildings with blast-resistant glass and traffic buffers to protect against car bombs. “This city is as safe as it’s ever been,” Bloomberg said. “Is it perfectly safe? No, but we always will have events, we’ve had 11 or so in the last eight years, and every time we have responded appropriately. We keep changing our procedures, we keep studying what happens overseas, and we so far have done the right thing. And you can never guarantee 100 percent.” Police presence has been increased in the Times Square area today. Bloomberg urged tourists and New Yorkers to continue visiting the area and “enjoy a Broadway show.” The mayor is founder and majority owner of Bloomberg News parent Bloomberg LP. To contact the reporters on this story: Henry Goldman in New York City Hall at hgoldman@bloomberg.net ; Allison Bennett in New York at abennett23@bloomberg.net .