Suspect nabbed in Boston Marathon bombing

DEVELOPING: Investigators have arrested a suspect in the Boston Marathon bombing after reviewing photos and video from Monday's event, a federal source confirmed to FoxNews.com. The suspect, who is expected to appear in federal court in Boston later today, has not yet been named by authorities. He was seen on surveillance footage that showed a young man carrying – and perhaps dropping – a black bag at the second bombing scene at the finish line of Monday's race, where two bombs exploded, killing three and injuring 176. The camera at a Boylston Street Lord & Taylor directly across the street from one of the blasts, has given investigators clear video of the area, according to the unnamed official. Read more: www.foxnews.com...