Investigators say they are following strong leads in identifying suspects behind the Boston marathon bombings, after a study of video footage near the finish line.
Both cellphone and surveillance video were reportedly used to identify possible suspects, the Boston Globe reported.
According to reports, a suspect was seen carrying and possibly dropping a black bag outside of a restaurant on Boylston Street, the site of the second bombing.
"The camera from Lord & Taylor is the best source of video so far," said Dot Joyce, a spokeswoman for Boston Mayor Thomas M. Menino told the Globe. "All I know is that they are making progress."