According to this New York Daily News post, the FBI is looking closely at this footage (above) of a man running at the moment of the Boston Marathon bombing.
The footage, in GIF form, is included in a post by the group 4Chan ThinkTank, which aims to investigate the bombing in a crowdsourced effort.
Meanwhile, investigators have reportedly narrowed in on a suspect pictured in surveillance footage from the Lord & Taylor store near the bombing.
According to CBS, the man the police are reportedly looking for a white male, with a white backwards hat, and a black jacket.
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