BOSTON â€” The F.B.I. released still and video images of two men whom they characterized as suspects in the Boston Marathon bombings on Thursday evening and asked for the publicâ€™s help in identifying them.
One of the men was captured on video setting down a backpack at the site of the second explosion, said Richard DesLauriers, the special agent in charge of the F.B.I.’s Boston field office.
â€œToday we are enlisting the publicâ€™s help to identify the two suspects,â€ Mr. DesLauriers said at a news conference Thursday evening in Boston.
Investigators have been poring over surveillance videos from stores near the scenes of Mondayâ€™s deadly blasts, as well as footage taken on smartphones and by television crews filming the marathon. â€œWithin the last day or so, through that careful process, we initially developed a single person of interest,â€ Mr. DesLauriers said. â€œNot knowing if the individual was acting alone or in concert with others, we obviously worked with extreme purpose to make that determination.â€
After a concerted effort, he said, investigators determined that a second suspect was involved. One of the men was shown wearing a white cap, and the other a black cap. Mr. DesLauriers urged anyone who has seen the men, or who knows who they are, to call 1-800-CALL-FBI (1-800-225-5324).
To see all the photographs the FBI has realized, go to fbi.gov