NORWALK - Asking for the public's help is a tried and tested policy for law enforcement in southwestern Connecticut, and one that seems evermore pertinent after Monday's bombings in Boston.

Officials with the FBI are hoping to piece together the attack using thousands of compiled images. They have since isolated two suspects believed to be responsible, but are still relying on people for possible identification.

In Westport, authorities say surveillance photos and videos are proven tools used in about 50 percent of their investigations. One photo helped capture the man who police say murdered a jeweler back in 2011.