BOSTON – The daunting task of sifting through thousands of images of the Boston Marathon bombing site in search of a culprit suddenly telescoped to a single video from a Lord & Taylor security camera Wednesday.
The discovery of video of a man who wore a large backpack to the finish line area and then dropped the package there raised hopes for an imminent breakthrough in the case, setting off a media frenzy and insistent statements from authorities that no arrest has been made. A Boston city official said the video is of special interest to investigators.
The second full day of the investigation into the attack that killed three people and injured at least 176 brought jitters, rumors and at least the hope that investigators had made important progress, though Massachusetts Gov. Deval Patrick said that, although the probe is making some progress . . . its going to be slow, its going to be methodical.
Bostons federal courthouse, where hundreds had gathered in response to false reports of an arrest, was briefly evacuated because of a bomb threat. Officials also evacuated a Boston hospital, Brigham and Womens, and Oklahoma Citys City Hall because of suspicious vehicles outside. No explosives were found in those cases.
In Boston, many of the injured were released from hospitals. At Brigham and Womens, which initially treated 35 people, only 11 were still hospitalized Wednesday evening, four of them critical.
And Boston University released the name of a previously unidentified woman who was killed in the blast. Lu Lingzi, a graduate student in math and statistics at the university and a Chinese national, was watching the race with friends when the bombs blew up.
Wednesdays whirlpool of reports demonstrated the extraordinary promise and power that new technologies bring to criminal investigations, but also the risk and unreasonable expectations that now permeate such probes. When federal authorities asked the public for help Monday, they received thousands of video clips and still images of the bomb site.
Some people, empowered by smartphones and ever-more-sophisticated technology, didnt leave the detective work to the professionals. They joined forces on sites such as Reddit.com to examine crowd pictures, searching for – and then virally distributing – images of backpacks that resembled the shredded bag in photos the FBI released Tuesday.
Black backpacks turn out to be ubiquitous, and when five of them were found in a single photo of the crowd on Boylston Street, the search quickly drew criticism from readers worried that innocent people could be harmed by being identified as suspicious. Others questioned whether black backpacks were even the most important lead, recalling the search for white box trucks that steered investigators astray in the Washington sniper case a decade ago.
In Boston, police barricades still ringed a 12-block area around the finish line, guarded by city police and the Massachusetts National Guard.
Doug Silkwood, a runner wearing his official marathon jacket, stopped at the barricade and recalled how hed expected his first Boston Marathon to end with hundreds of thousands of people having a great time. The bombings dashed all that, said Silkwood, 47, an engineer from San Jose, Calif.: Its probably easier to protect a Boston Celtics game than an open event like the marathon, but he said he plans to return next year, to do it out of spite.