Facebook user David Green says a photo that he says...

Facebook user David Green says a photo that he says was taken moments after the second explosion at the Boston Marathon was been provided to the FBI to identify "Suspect 2," seen in a white baseball cap in the image. (April 15, 2013) Credit: Facebook

A runner from Florida may have captured a higher-resolution photo of one of the Boston Marathon suspects on his iPhone. David Green of Jacksonville, Fla., told CNN he took the picture and posted it to his Facebook page on Monday. CNN broadcast the photo Thursday night as Piers Morgan interviewed Green.

The image shows marathon spectators fleeing shortly after the bombs exploded. Green, who had finished the race, said he snapped one photo and then went to the bombing scene to see if he could help.

Gregg Sarra sounds off on the Nassau Conference II football matchup between Calhoun at Carey, plus the comeback story of New Hyde Park's Gabriel Peter, an update on the high school fantasy football standings and the plays of the week. Credit: Randee Daddona, Gary Licker, Anthony Santino

Sarra Sounds Off, Season 3, Ep 4: Top football teams in action, fantasy update and plays of the week Gregg Sarra sounds off on the Nassau Conference II football matchup between Calhoun at Carey, plus the comeback story of New Hyde Park's Gabriel Peter, an update on the high school fantasy football standings and the plays of the week.

Gregg Sarra sounds off on the Nassau Conference II football matchup between Calhoun at Carey, plus the comeback story of New Hyde Park's Gabriel Peter, an update on the high school fantasy football standings and the plays of the week. Credit: Randee Daddona, Gary Licker, Anthony Santino

Sarra Sounds Off, Season 3, Ep 4: Top football teams in action, fantasy update and plays of the week Gregg Sarra sounds off on the Nassau Conference II football matchup between Calhoun at Carey, plus the comeback story of New Hyde Park's Gabriel Peter, an update on the high school fantasy football standings and the plays of the week.

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