Hilfiger Outlet mourning continues in wake of

mourning continues in wake of attacks

Investigators combing through the grim aftermath of the deadly Boston Marathon terrorist attack have found evidence that timing devices were used Monday to detonate the bombs that ripped through race spectators on Boylston Street, said an official briefed on the investigation.

Working with fragments painstakingly gathered at what is considered the city largest ever crime scene, they also that the two bombs were probably fashioned from 6 liter pressure cookers, filled with nails and small ball bearings, like buckshot, to increase the carnage, and then hidden in black nylon bags or backpacks and left on the ground. FBI bomb experts at the FBI Academy in Quantico, Va., will try to rebuild the devices from fragments that include a circuit board that indicated the bombs were detonated on a timer, rather than remote control.

Extra police Hilfiger Outlet patrols roamed eerily quiet streets on Tuesday, while other law enforcement officials started reviewing videos and photos frame by frame of one of the most photographed events in the world. Security fears disrupted two flights at Logan Airport, as airlines responded to the concerns of jittery passengers. And the White House confirmed that President Obama would visit the city on Thursday, to speak at an interfaith prayer service.

The FBI, which is leading the massive investigation into the bombing, asked the public for tips on anyone who may have been lugging a heavy black bag near the finish line. Local and federal law enforcement officials are scouring thousands of photographs and video for some sign of the bomber.

person who did this was someone friend, co worker or neighbor, said DesLauriers, special agent in charge of the FBI Boston office. knows who did this. No one has claimed responsibility for the atrocity and range of suspects and motives remain wide open, said.

As the investigation broadened, so did the city mourning, as more details were on the three people who died an 8 year old boy from Dorchester, a 29 year old woman from Medford, and a Chinese graduate student at Boston University.

A state run Chinese newspaper said the third victim was Lu Lingzi, the Associated Press reported Wednesday. An editor at the Shenyang Evening News said that Lu father confirmed his daughter death when reporters visited the family home.

Scores were injured Monday by the blasts, many of whom lost limbs.

Bostonians shaken by the woke Tuesday to a chang Hilfiger Outlet ed city, with heavily armed officers standing sentry at intersections, MBTA stations, the airport, and even city parks.

But there also were moving displays of solidarity from cities across the United States: The Boston city flag flew at half staff at New York City Hall in Manhattan. The Chicago sports section published a tribute to Boston sports teams. much as it is anathema for a Chicago fan to root for any other town especially Beantown and all of its championships here we are, the paper wrote. in there, Boston. at Yankee Stadium in the Bronx, Boston ultimate displayed the Yankee logo side by side with the Boston Red Sox and the message: We Stand. in the city, words of caution mixed with defiant Boston; we one community, said Mayor Thomas M. Menino. not going to let terrorists take over our city. at the Cathedral of the Holy Cross.

According to the official briefed on the investigation, the first of the two bombs to was placed on the ground on Boylston Street, across from finish line viewing stands where dignitaries had been sitting earlier, including Patrick; the second bag was placed on the ground about 75 to 100 yards away, outside the Forum restaurant at 755 Boylston St.

The bomb making technique used in the attack was detailed in a 2010 article in the online magazine, Inspire, published by the terrorist group Al Qaeda. The technique was used in the attempted bombing of Times Square in 2010, as well as in an attack in Pakistan earlier that year.

However, security experts said the technique is akin to a scaled up pipe bomb, and has been used in attacks by organizations not related to Al Qaeda.

Roy Parker, a retired Bureau of Alcohol, Tobacco, Firearms, and Explosives agent who the agency explosives training program, said Tuesday the circuit board would be to determining whether it was a timer or control device.

Based on his past experience investigating some 50 bom Hilfiger Outlet bings, Parker said examiners are looking at scraps of the bomb components, bags, and all forensic evidence found at the scene of the blasts. looking for a needle in a haystack, but the needle is there, said Parker, who now works for TWT Consulting in Maryland. you look long enough, you get stuck with it. This is not an unsolvable crime.

A pressure cooker bomb not a high tech device, said Michael White, director of explo and training with MSA Security, a consultant company, in an interview. Typically, such a device would contain low level explosives inside a container that could withstand a great deal of pressure. The explosives would then be ignited with some type of power source, setting off the explosion.

Risk analyst Alexia Ash said the early signs suggest the was more likely perpetrated by a home grown terrorist, rather than a foreign network like Al Qaeda.

talking Al Qaeda but not trained, said Ash, head of forecasting in North America for Exclusive Analysis Ltd., an IHS affiliate that analyzes relevant political and violent risks around the world. person who made this type of weapon had some type of training or at least some type of practice. It wasn a cocktail, but it wasn a truck bomb. It was between the two. It low capability, but something that would require training or practice to produce. enforcement officials also renewed a call Tuesday for photos and video shot by race spectators, on the theory that somebody among the untold thousands of people who documented the scene has pictures of the bomber. Homeland Security officials asked departing passengers at Logan Airport on Tuesday to share their photos or videos of the finish line, said a law enforcement official familiar with the investigation.

Hundreds of officers fanned out across the city Tuesday, working 12 hour shifts in a show of force meant to reassure the public. you don really want to take public transportation right now, said 23 year old Shelby Zawaduk, while waiting at Park Street Station for a Green Line train. seeing the guards definitely makes me feel better. are also guarding specific areas around Boston they deem vulnerable, particularly Jewish places of worship and institutions, according to a Marathon response plan obtained by the Globe.

Boston police assigned two officers to patrol the Consulate General of Israel at Park Plaza, and ordered officers throughout the city to randomly patrol 14 other Jewish institutions, including temples, hospitals, a day care center and a senior center. Officers assigned to the South End district were to patrol Jewish campus organizations, such as Northeastern University Hillel and Boston University Hillel.

More than 140 officers were sent to patrol hotels across the downtown area and more than 100 were sent to guard the crime scene perimeter, according to the plan.

Boston police have said they have heard no specific threat. The plan, officials said, reflects overall concern police would have over any locations they deem vulnerable, because of their symbolic importance, their geographic location, or in the case of Jewish institutions their history as targets of terrorism.

Investigators on Monday had questioned a Saudi national, a student at a Boston area university, who had been hurt in the explosion. US officials informed the Embassy of Saudi Arabia in Washington Monday night that the student was not a suspect and was cooperating with the investigation, according to Nail Al Jubeir, spokesman for the embassy. Passengers and bags were taken Hilfiger Outlet off the plane and re screened, and two people were rebooked on a later flight, said United Airlines spokeswoman Christen David.

Soon afterward, a US flight arriving from Philadelphia was kept from the gate due to suspicions about a checked bag on the plane. Passengers were bused to the terminal. The bag was rescreened and cleared.

Traffic snarled around the 12 block crime scene in the heart of Back Bay, which remained blocked off for the investigation.

Boston Police Commissioner Edward Davis predicted the would remain closed for couple of days.

One law enforcement official briefed on the investigation said Copley Square presents a challenging crime scene. are taking evidence off the tops of buildings, the official said.