The FBI encouraged the public to look at the suspects in the video to see if they might be able to identify them. The images show both men wearing baseball caps and dark jackets. Both men are also seen in the video carrying backpacks -- one dark and the other a lighter brown color. The images and video are posted on the FBI's website
. Authorities also believe the men worked in association. The surveillance video shows the men walking, one right behind the other, seemingly in tandem.The videos showing the suspects are the biggest break in the case so far since Monday's bombings. Authorities have been working to try and identify parts of the bombs recovered by forensic analysts, and trace them to the stores they were purchased at.The FBI did not disclose what possible motive the men night have had in setting off explosives at Monday's race, which killed three people and wounded nearly 200 others. An 8-year-old boy, a 29-year-old woman, and a female Chinese graduate student.Persons with information are encouraged to call 800-CALL-FBI. Online tips can be forwarded to bostonmarathontips.fbi.gov
: Bombing suspects captured on surveillance video
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