By DENISE LAVOIE and ADAM GELLER, Associated Press
BOSTON (WGGB/AP) — The FBI released photos and video Thursday of two suspects in the Boston Marathon bombing and asked for the public’s help in identifying them, zeroing in on the two men on surveillance-camera footage less than three days after the deadly attack.
FBI agent Richard DesLauriers said the photos of the two men came from surveillance cameras near the explosion sites. One man is seen wearing a dark baseball cap, the other a white cap worn backwards.
The man in the white cap is seen setting down a backpack at the site of one of the blasts, DesLauriers said.
The break in the investigation came just days after the attack that tore off limbs, shattered windows and raised the specter of another terrorist attack on U.S. soil.
The suspects are considered armed and extremely dangerous, DesLauriers said, and people who see them should not approach them.
“Do not take any action on your own,” he warned.
Generally, law enforcement agencies release photos of suspects only as a last resort, when they need the public’s help in identifying or capturing someone.
Releasing photos can be a mixed bag: It can tip off a suspect and deny police the element of surprise. It can also trigger an avalanche of tips, forcing police to waste valuable time chasing them down.
Video and photos recovered in the investigation are being examined and enhanced by an FBI unit called the Operational Technologies Division, said Joe DiZinno, former director of the FBI lab in Quantico, Va.
Investigators are looking at video frame by frame — a laborious process, though one aided by far more sophisticated facial recognition technology than is commercially available, forensic specialists said.
The explosions Monday killed three people and injured more than 180.
(Information from the Associated Press was used and edited for this report)
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