Releasing photos can be a mixed bag: It can tip off a suspect and deny police the element of surprise. It also can trigger an avalanche of tips, forcing police to waste valuable time chasing them down.
Within moments of the announcement, the FBI website crashed, perhaps because of a crush of visitors.
In the images, both men appear to be wearing dark jackets. Suspect 1 appears to be wearing a backpack. The planting of the backpack is not depicted in the video footage that was made public.
The FBI made no mention of the men’s height, weight or age range and would not discuss the men’s ethnicity.
The information on the first suspect was developed within a day or so before its release, DesLauriers said. Agent Daniel Curtin said the FBI did not issue the photos earlier because authorities wanted to be meticulous: “It’s important to get it right.”